Using the 12 ounces of chocolate and 12 ounces of cream as you do, how much vanilla, extra-strong flavor, or espresso powder do you suggest using per pan? These look great! It's absolutely to taste. I think 1 teaspoon of vanilla; 1/4 to 1/2 teaspoon of espresso powder, or a few drops to 1/8 teaspoon extra strong flavor would be good starting places... PJH

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