For the cookies: cream together the butter and sugar with a handheld mixer
until fluffy in a bowl. In a separate bowl, beat egg yolks, then beat in the extracts
. Add the beaten egg
yolk mixture to the creamed butter
and sugar and blend
well. Whisk together the flour, baking soda, cocoa powder
and cream of tartar. Add the dry ingredients to the wet mixture, mix until well blended. Take a spoonful into your palm and form into 1-inch balls. Roll them in sugar and place on a greased cookie sheet. Slightly flatten before placing in the preheated oven. Bake at 350 degrees F until firm and slightly golden at the edges, 12 to 15 minutes.
For the topping: whisk
together the sugar, cocoa, chili powder and cinnamon for the topping.
with topping while still warm.