Preheat oven to 375 degrees F. Mix together shortening and sugar until light and fluffy in a large mixing bowl. Beat in the eggs, milk, and vanilla. Add the flour, cocoa, salt and baking soda and stir just until blended. Stir in chocolate chips by hand.
Scoop dough by tablespoons, and drop 2 inches apart on ungreased baking sheets. Bake in preheated 375 degree F oven for 7 to 9 minutes. Do not overbake. Cool on baking sheet for 2 minutes before removing to wire racks to cool completely. Store in an airtight container.