So, I am putting together the clone recipe from the BYO book for Young's Double Chocolate Stout. It calls for .33 oz. of Chocolate Extract (or Essence . . . or something). The only thing that I can find are these little bottles of flavoring I found at a cake decorating shop. This product contains propylene glycol.
What is it?
Is it an oil?
If I add this amount, will it kill my beer's head retention, etc.?
What are some alternatives?
The recipe calls for powerdered cocoa . . . can I just add some extra rather than this flavoring?
I need advice from those of you who have made choco stouts successfully.