Heat oven to 375 degrees F.
Combine brown sugar, shortening, water, vanilla and peppermint extracts in large bowl; beat at medium speed until well blended. Add eggs; mix well.
Combine flour, salt, cocoa and baking soda in medium bowl; add to shortening mixture. Beat at low speed just until blended. Stir in mint chocolate chips.
Drop dough by rounded measuring tablespoonfuls 2 inches apart onto ungreased baking sheets.
Bake 7 to 9 minutes or until cookies are set. Cool 2 minutes on baking sheets; transfer to cooling racks to cool completely.
Is your cocoa powder still good? Unsweetened cocoa powder can be stored in a tightly closed container in a cool, dark place for up to two years.