110 g chocolate chop with a knife until the pieces no larger than beans.

90 grams of chocolate to melt with butter in a water bath or in the microwave, stir in the sugar, coffee (if granules, the coffee should dissolve in 1 tbsp of boiling water). Add the eggs, flour, cocoa, baking powder and a pinch of salt. Knead the dough (with a spoon or spatula, no mixer), it will be very soft but not sticky. To introduce the remaining pieces of chocolate.

Of dough roll into balls slightly bigger than a walnut, I get 30 pieces. Bake in a preheated oven (180 C) 10-13 minutes. The baking time in this recipe is important cookies should be very soft, so it will be similar to truffle. Leave cookies to cool so the chocolate pieces again hardened.