Preheat oven to 350 degrees. In a large bowl, stir together flour, cocoa, salt, baking powder and baking soda. In a mixing bowl, beat together butter and sugar on low speed of electric mixer until fluffy. Add egg and vanilla; beat well. Stir in dry ingredients; mix well. Shape dough into 3 cm balls; place on ungreased cookie sheet. Press in center and place drained cherry in center of each cookie. In small saucepan, combine chocolate chips and milk until chocolate is melted (or heat in microwave oven). Stir in 1 tablespoon of drained liquid from cherries. Spoon 1 tablespoon of chocolate/milk mixture over each cherry. Bake for 10 minutes.