Mocha Butterballs

1 cup soft butter
1/2 cup white sugar
2 teaspoons vanilla extract
2 teaspoons instant coffee granules
1 tablespoon hot water
1 3/4 cups flour
1/4 cup cocoa
1/2 teaspoon salt
2 cups chopped walnuts, , finely chopped
icing sugar

Preheat oven to 325F degrees.
Have ungreased cookie sheets ready.
Beat butter, sugar and vanilla together until fluffy.
Dissolve coffee in hot water and stir into butter mixture.
Sift flour, cocoa and salt into mixture and add nuts.
Stir to blend well.
Shape into one-inch balls and put on cookie sheets.
Bake 15 minutes or until set.
Roll in icing sugar while warm.
Let cool and roll in icing sugar again before storing in a container with a tight lid.