Lye Soap - cooking recipe

Ingredients

fat (enough to make 2 qt. when melted)
1 can lye
1 qt. water
1/2 c. ammonia
2 Tbsp. Borax, dissolved in 1/2 c. water

Preparation

Heat fat and strain through a cloth.
Measure 2 quarts and set to cool.
Mix 1 can lye into 1 quart water and stir until lye dissolves.
Do not use aluminum utensils and be careful not to splash on yourself.
Stir.
Let cool for about 1 hour.
Pour lye slowly over fat, stirring slowly until lye and fat are thoroughly blended.
Add 1/2 cup household ammonia.
Add 2 tablespoons Borax dissolved in 1/2 cup water.
Stir until mixture is the consistency of honey.