02/08/2025
Shated from another site
HomeMade Lye (making soap naturally)
Want to learn an old-fashioned skill Grandma knew? Let's dive into how to make lye from scratch using hardwood ash! This is a fascinating process for homesteading, DIY projects, and understanding how things were made in the past. 🧼🔥
Lye made this way is Potassium Hydroxide, perfect for making softer soaps. (The lye you buy for hard bar soap is usually Sodium Hydroxide, which originally came from salt).
⚠️ IMPORTANT SAFETY WARNING ⚠️
Lye is a caustic substance that can cause serious chemical burns. This is NOT a project for kids. Please handle with extreme care.
Always wear safety goggles and chemical-resistant gloves.
Work in a well-ventilated area, preferably outdoors.
Use non-reactive cookware (stainless steel or enamel). Do NOT use aluminum.
How to Make Lye from Hardwood Ash (The Grandma Method)
Here’s a step-by-step guide to making your own Potassium Hydroxide:
Step 1: Make Your Ash
Build a fire using only hardwoods (like hickory or oak).
Let the fire burn down completely until all that's left is a fine, white/grey ash.
Allow the ash to cool completely before handling.
Step 2: Create the Ash Slurry
Scoop the cooled ashes into a large, non-reactive pot (like an enamel stockpot).
Add just enough water (rainwater is traditionally best) to turn the ashes into a thick, mud-like consistency. Mix well.
Step 3: Let it Leach
Let the ash and water mixture sit for at least 8 hours, but no longer than 36 hours.
The water will slowly leach the potassium salts from the ash. For best results, give it a good stir every hour or so.
Step 4: Strain the Lye Water
Carefully pour the mixture through a strainer or colander into another large, non-reactive pot. This separates the dark, liquid lye water from the solid ash chunks.
Step 5: Evaporate the Water
Place the pot of lye water on an outdoor burner or a well-ventilated stove.
Bring the liquid to a boil, then reduce the heat to a gentle simmer.
Let it simmer until all the water has evaporated. This can take a long time! You will be left with a crystallized powder.
Congratulations! That powder is your homemade lye (Potassium Hydroxide). You can now store it in a clearly labeled, airtight container for future projects like making traditional soft soap.
Grandma's Tip: Soap made with this lye will be soft. If she wanted a harder bar of soap, she would add salt to the mix to help it harden!