Chocolate Drop Cookies

1/2 c. shortening
1 c. brown sugar
1 well beaten egg
1 tsp. vanilla
1/2 c. sweet or sour milk
4 T. cocoa
1-2/3 c. flour
1/2 tsp. salt
1/2 tsp. soda
1/2 c. walnuts

Source: Lucile Brodine