Step 1: Make the Lye Solution - Wearing protective gloves and eyewear, carefully stir the lye (sodium hydroxide) into the distilled water until dissolved.
Step 2: Prepare the Oils - Gently heat the coconut oil and tallow (or lard) on low heat until melted. When the solid oils are melted, take the pan off the heat and pour into the olive oil.
Step 3: Mix - Pour the cooled lye solution into the warm oils. Using a combination of hand stirring and an immersion blender, stir the soap batter until it thickens and reaches trace.
Step 4: Pour in Mold - Pour the soap batter into your soap mold. Cover lightly with wax or freezer paper, then a towel or light blanket for insulation.
Step 5: Cut and Cure - Keep the soap in the mold for one to two days, or until it’s easy to remove, then slice it into bars when it’s firm enough not to stick to your cutting tool. Cure on coated cooling racks or sheets of wax paper for about four weeks before using.
