Bring coffee to a boil; remove from heat. Add baking soda and raisins. Cover and allow to stand overnight.
In the morning, preheat oven to 325°F.
Grease and flour three metal coffee cans (remove labels) and set aside. In a large bowl, add sugars, flour, nuts, and salt to coffee/raisin mixture. Mix well.
Bake 65 minutes. Cool 15 minutes in cans before removing—remove by cutting open the other end and pushing the bread through. Slice and serve with cream cheese or butter. Makes 3 loaves.