1/2 lb. butter
1 pt. unsulphered molasses
2 c. brown sugar
2 tbsp. cinnamon
2 tbsp. ginger
2 tbsp. mace
2 tbsp. allspice
1 tbsp. baking soda dissolved in 1 tbsp. hot water
8 1/2 c. flour

Chill dough. Roll thin, bake at 300 degrees for 5-10 minutes.