So, first brew a strong coffee (the strength of your desire) - we have 50 ml of brewed coffee. Melt the chocolate (chocolate to take 3-4 dice. All the chocolate is divided into cubes, so I have those same cubes). I chocolate cubes tossed in coffee and put in the microwave, and then cook it - that's our chocolate and melt.

Now take the remaining ingredients (cream, condensed milk, whiskey, egg) and mix well in a blender or with a mixer.

Then add coffee-chocolate mixture and mix well again.

Bottle pour over boiling water and pour back our liquor. Everything is ready, can be used. Store in the refrigerator. But that's how it will be stored, I don't know, because the liquor was consumed in two days. Of these products is slightly greater than 1 liter.