1. Cream butter.
2. Add brown sugar and eggs and mix.
3. Mix in vanilla, salt, and cocoa.
4. Stir in flour and baking soda.
5. Stir in chips.
6. Drop by teaspoonfuls onto greased cookie sheet.
7. Bake at 350 degrees for 8 minutes.
8. Remove from oven and leave on cookie sheet one minute before removing.