Melt in a double boiler
2 oz unsweetened chocolate
with
6-8 Tbsp heavy cream
1/2 C sugar
While still hot, add very slowly to 1 beaten egg, beating as you add.
To reheat use a double boiler.
Variations: instead of heavy cream, substitute 6-8 Tbsp half & half or 4 Tbsp milk + 2 Tbsp butter