
Making lye soap the traditional way is a process that requires some elbow grease, but the end result is well worth the effort. You'll need to mix lye with water in a well-ventilated area, then add oils and fats to create a soap base.
Lye, or sodium hydroxide, is a strong alkaline substance that's essential for turning oils into soap. In this recipe, we're using a high lye concentration to create a hard, long-lasting bar of soap.
The traditional way of making lye soap involves using a combination of olive oil, coconut oil, and lard to create a rich, moisturizing soap. This blend of oils provides a good balance of cleansing and moisturizing properties.
Broaden your view: Homemade Laundry Soap with Essential Oils
Recipe
Making old fashioned lye soap is a fun and rewarding process. To get started, you'll need to gather a few basic ingredients.
The recipe is surprisingly simple, using traditional ingredients like tallow, lard, or palm oil. You'll need 2 pounds of fat, which can be sourced locally or sustainably.
For another approach, see: Lye Soap Ingredients
You'll also need filtered, pure water, and lye, but the amount of lye will depend on the type of fat used. A lye calculator can help you determine the right amount.
Here's a basic recipe using Arizona tallow:
This recipe makes a low-suds soap, which is perfect for use with HE washing machines. Keep in mind that this soap may be too drying for daily use, but it's a great option for special occasions or sensitive skin.
For more insights, see: Why Use Lye in Soap
Preparation
Before you start making your old fashioned lye soap, you'll need to prepare your workspace and materials. This includes a well-ventilated area, protective gear like gloves and goggles, and a digital scale for accurate measurements.
To ensure your safety, it's crucial to mix lye and water in a well-ventilated area, away from children and pets.
How to Make
Making a plan is key to preparation. It helps you stay organized and focused on what needs to be done.
Before you start making a plan, it's essential to identify your goals. According to the article, "A clear goal is the foundation of a good plan." This is because goals give you direction and help you prioritize tasks.
To make a plan, you need to break down your goals into smaller, manageable tasks. For example, if your goal is to move to a new home, you might need to tasks such as packing, hiring movers, and changing your address.
A good plan should also include a timeline. This will help you stay on track and ensure that you complete tasks on time. As mentioned in the article, "A timeline helps you avoid last-minute rushes and ensures that everything is done in a timely manner."
You might like: Is Lye Soap Good for Your Skin
Equipment
Equipment is an essential part of making soap. You can use a variety of materials, including plastic, glass, stainless steel, and silicone.
Plastic is a great option, but be aware that really lightweight plastic might not hold up to the heat created during the process. Look for yogurt or butter containers in your recycle bin.

Glass is another option, but be cautious as it may become etched over time, making it more susceptible to breakage. You can also use jars, but keep in mind you may want to use them once and then toss them.
Stainless steel is a durable option that can withstand high temperatures. You can use stainless steel bowls, spoons, pitchers, and whisks.
Silicone is a versatile material that can be used for scrapers and molds.
Cardboard boxes can also be used as molds when lined with a plastic bag. To determine the volume of your container, measure its length and width, multiply them together, and then multiply the result by 1.5 inches.
A food scale is an essential tool for measuring ingredients accurately. A digital scale is preferred, as it provides precise measurements.
You'll also need some protective materials to cover your work area, such as freezer paper, newspaper, or an old sheet, to make clean-up easier.
Here's a list of equipment you may want to have on hand:
- Plastic bowls, cups, spoons, whisks, and scrapers
- Glass measuring cups and bowls
- Stainless steel bowls, spoons, pitchers, and whisks
- Silicone scrapers and molds
- Cardboard boxes lined with plastic bags
- Food scale
- Freezer paper, newspaper, or an old sheet for covering your work area
When weighing lye and frozen beer cubes, make sure to zero your scale after placing the container on it.
Leaching

Leaching is a crucial step in making soap, and it's fascinating to see how homesteaders did it without modern equipment. They used a hopper or a wooden barrel with holes drilled in the bottom, which rested on blocks to allow a bucket to sit beneath.
The filtering system consisted of gravel, straw, and twigs, all stacked on top of each other. This might sound like a strange setup, but it was surprisingly effective.
Homesteaders filled the bucket with ashes, and then poured rainwater through it, which trickled through the ashes and the filter, and collected in the bucket. Rainwater was a great choice because it was some of the purest water available at the time.
After a few trips through the ashes, the water turned brown and became very caustic. This is where things got interesting, as homesteaders didn't have access to fancy lab equipment to test the alkalinity of the solution.
So, they got creative and used natural indicators to check the strength of the lye water. If an egg or potato floated in the middle, the solution was just right. If it floated too high, the solution was too strong, and if it sank, it was too weak.
Curious to learn more? Check out: Lye Solution for Soap Making
Process
To make old fashioned lye soap, you'll need to follow a process that's both traditional and precise. The Hot Process Method is a good place to start, where you'll measure the lye and water in separate bowls using a kitchen scale, and then combine them with caution, as the lye mixture is caustic.
You'll need to allow the lye mixture to cool down while you prepare the fats/oils, which should be measured by weight and melted in a crock pot on low heat. Once the lye/liquid mixture is added to the oils, you'll blend the mixture for at least 3-5 minutes until it reaches a thick, pudding-like consistency.
Here are the basic steps involved in the Hot Process Method:
- Measure the lye and water in separate bowls using a kitchen scale.
- Combine the lye and water with caution, as the lye mixture is caustic.
- Allow the lye mixture to cool down while preparing the fats/oils.
- Melt the fats/oils in a crock pot on low heat.
- Blend the mixture until it reaches a thick, pudding-like consistency.
The Making of
Process is often viewed as a series of steps, but it's actually a complex system that involves many factors.
In the article, we discussed how process can be influenced by external factors, such as technology and social norms.

The use of automation in manufacturing has significantly improved efficiency and reduced costs.
Automation has also enabled the production of higher quality goods, thanks to the ability to repeat precise tasks.
The importance of standardization in process cannot be overstated, as it ensures consistency and reduces errors.
The example of the Toyota production system shows how standardization can lead to significant improvements in efficiency and productivity.
Standardization also enables the sharing of best practices and knowledge across teams and departments.
The concept of a "process map" can be a useful tool for visualizing and understanding the various stages of a process.
Hot Process Method
The Hot Process Method is a game-changer for soap-makers, allowing for more freedom and flexibility in the recipe-making process.
To get started, you'll need to measure the lye and water separately using a kitchen scale, and run your recipe through a lye calculator to ensure the proper amounts of fats, oils, lye, and liquid.
Always remember to carefully combine the lye and water by pouring the lye into the water, never the other way around, and stir until the lye is completely dissolved.
The lye mixture needs to cool down while you prepare the fats and oils, so make sure to allow it to sit under a vent.
You'll also need a crock pot to melt the fats and oils, which should be measured by weight and then placed in the crock pot to melt on low heat.
Once the mixture is melted, add the lye liquid mixture to the oils in the crock pot and stir.
Blend the mixture in the crock pot for at least 3-5 minutes, or until it reaches the "trace" consistency, which is a thick, pudding-like texture.
Here's a quick rundown of the steps involved in the Hot Process Method:
- Measure lye and water separately
- Carefully combine lye and water
- Allow lye mixture to cool
- Melt fats and oils in crock pot
- Add lye liquid mixture to oils
- Blend until "trace" consistency is reached
- Cook soap for approximately 1 hour
- Prepare mold and spoon soap mixture in
- Allow soap to cool and harden for 24 hours
Step 2: Equipment
To make the soap-making process as smooth as possible, you'll need the right equipment. You can repurpose items from your kitchen and recycle bin, such as plastic bowls, cups, and spoons, as well as glass measuring cups and bowls.

When it comes to plastic, be aware that lightweight plastic might not hold up to the heat created during the process. I've found that yogurt or butter containers work well, but it's essential to check their durability.
Glass measuring cups and bowls are great options, but they may become etched over time, making them more prone to breakage. I've learned to use them sparingly and replace them when necessary.
Stainless steel equipment, like bowls, spoons, and pitchers, is a great choice for soap making. Silicone scrapers and molds are also excellent options.
If you're looking for a unique mold, consider using a cardboard box lined with a plastic bag. To determine the container's volume, measure its length and width, multiply them by the desired thickness, and then multiply that result by 0.40.
You'll also need a food scale, preferably digital, to accurately weigh the lye and other ingredients. I highly recommend investing in a good quality scale – it's a game-changer for soap making.
To make cleanup easier, cover your work area with freezer paper, newspaper, or an old sheet. A stick blender can also come in handy for mixing and blending ingredients.
Here's a list of the equipment you'll need:
- Plastic: bowls, cups, spoons, whisks, scrapers
- Glass: measuring cups, bowls
- Stainless Steel: bowls, spoons, pitchers, whisks
- Silicone: scrapers, molds
- Cardboard boxes: lined with a plastic bag
- Food scale
- Freezer paper, newspaper, or old sheet
- Stick blender
Step 3: Ingredients

To make this beer soap, you'll need a specific set of ingredients. Here's what you'll need to gather:
Avocado oil, castor oil, coconut oil, lard (or beef tallow), olive oil, and soybean oil are all required in different quantities. You'll need 2 oz of avocado oil, 2 oz of castor oil, 8 oz of coconut oil, 8 oz of lard (or beef tallow), 4 oz of olive oil, and 6 oz of soybean oil.
You'll also need a unique ingredient to give your soap that beer flavor – 12 ounces of flat beer. Yes, you read that right – beer! Freezing it into cubes makes it easier to work with.
Lye is another essential ingredient, but be sure to handle it carefully. You'll need 4.43 ounces (125 grams) of 100% lye.
If you want to create a fun design on top of your soap, you can use titanium dioxide to lighten the soap batter. This will give your soap a foamy head, just like a beer. To do this, mix 1 teaspoon of titanium dioxide with a small amount of water and set it aside for later use.
Step 7: Temperature Check

In Step 7, temperature plays a crucial role in making soap. The best outcome happens when the alkaline (lye solution) and oils are at about the same temperatures, between 80° and 110°. Both temperatures MUST be within 5-10 degrees of each other.
If one or both solutions seem too hot, you may want to use an ice bath for 1 or both solutions. Be careful not to spill water into either container, and don't use an ice bath if you're using a glass container, as the temperature difference could cause it to break.
Having a mold prepared is a must at this point. You can use a silicone loaf mold, but a small cardboard box, like a woman's shoe box, works great too. The box should be around 6x10 inches in size.
Safety and Cleanup
Be cautious when working with lye, as it can cause severe burns and skin irritation. Wear protective gear like gloves, goggles, and a long-sleeved shirt to prevent skin contact.
Additional reading: Homemade Laundry Soap for Sensitive Skin
Mix the soap batter thoroughly to avoid any lumps or unevenness, which can be difficult to clean up. Soap scraps can be reused to make other soap products, like soap flakes or soap powder.
After the soap has cooled and hardened, it's time to cut and package it. Always cut the soap in a well-ventilated area, away from children and pets.
Safety First
Safety First is not about being afraid, it's about being smart. You must respect the lye at all times.
Working with lye is no more dangerous than working with chlorine bleach, but you still need to take precautions. I personally prefer to wear a mask when working with lye, but it's not required.
You'll need some basic safety gear: rubber or latex gloves, eye cover (glasses or goggles), and a mask (if you choose to wear one). I don't use a mask, but it's up to you.
Here are some essential safety tips to keep in mind:
Remember to keep your gloves on and your eyes covered when working with lye and raw soap batter.
Clean Up

Don't be tempted to wash everything right now, it's best to wait 24 hours.
You'll need to wipe out any leftover raw soap batter from the bowls and utensils with old rags, paper towels, or newspaper, and then toss them into the washer to sit for at least 24 hours.
Throw away the paper you used to cover your work area and rinse out the cup that held the lye/beer mixture.
Wipe up your work area thoroughly to prevent any mess from spreading.
After 24 hours, the leftover soap batter has finished its chemical reaction and is now soap, so the utensils and old rags can be washed.
I still wear rubber gloves when washing the utensils and use hot water with Dawn dish washing soap, it's a good habit to get into.
A drywall knife is a great tool for cutting soap, its straight blade is much easier to use than a kitchen knife.
Consider reading: Does Homemade Laundry Soap Work
Historic Recipes
You can make a more sustainable lard soap recipe by substituting it for palm oil, as it has the same saponification value and moisturizing properties.
Lard can be found in the grocery store, often beside the shortening and oils, or in Hispanic markets if chain grocers don't carry it.
To render lard at home, use a slow cooker and cook it on low for about eight hours, then strain it and store it in a jar until ready to use.
Making lard soap is a safer process than traditional methods, requiring only sodium hydroxide and distilled water, as long as all safety precautions are met.
A pound of lard needs 2.15 ounces of chemically-pure lye crystals and 6.08 ounces of water to make a safe soap.
Consider reading: What Does Soap Do to Water
One of History's Tallow Uses
You can still make a lard soap recipe in your own kitchen, just like homesteaders did in the past. They cooked it in kettles over fires.
Pliny the Elder wrote about soap manufacturing in his book Historia Naturalis, and it's also mentioned in the Bible. The Holy Bible mentions soap a few times.
Medieval European soap was made from animal fat and was soft and smelly. The pleasant bars of soap came from the Middle East.
The Industrial Revolution and a couple of queens who liked to bathe helped increase soap use. So did the work of a famous microbiologist.
Homesteaders in 1800s America made old-fashioned lard soap recipes with potash, a caustic potassium chloride solution. They derived it from leeching rainwater through hardwood ashes.
Broaden your view: Alkaline All-natural Soap Made with Nourishing Oils Mixed with Lye
Making a Historic Lard Recipe
You can find lard in the grocery store, often beside the shortening and oils, or in Hispanic markets.
Lard has the same saponification value as palm oil and provides the same moisturizing properties, making it a great sustainable substitute in soap recipes.
Rendered at home, lard can be a truly homesteaded product, but store-bought lard is often whiter and has less fragrance due to its rendering process with water and steam.
Suggestion: How to Store Homemade Soap
To make lard soap, you'll need 2.15 ounces of chemically-pure lye crystals for every pound of lard, along with 6.08 ounces of water.
A 40-40-20 recipe for a basic bath bar uses 40 percent olive oil, 40 percent lard, and 20 percent coconut oil, requiring 6.4 ounces of lard, 6.4 ounces of olive oil, and 3.2 ounces of coconut oil.
Add 0.5 ounces of fragrance oil and two tablespoons of ground oatmeal to create a pleasant but rustic bar.
If using cold-process methods, allow the soap to gel in a safe place until the lye dissipates, and always input figures into a trusted soap/lye calculator before beginning any recipe to avoid mistakes.
Broaden your view: Lye and Lard Soap Recipe
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