Chocolate Raisin Drop Cookies

1/2 cup butter
1 cup brown sugar
2 eggs beaten
4 tbsp milk
1 tsp vanilla
2 cups flour
1/2 tsp soda
1/3 cup cocoa or 2 squares unsweetened chocolate melted
1/2 cup raisins


Preheat oven to 350º. Grease cookie sheet(s). Combine all  ingredients. Drop from teaspoon onto cookie sheet. Bake for approximately 15 minutes.