I looked into the 'Brew Enhancer' ingredients a while ago, and this is what I was able to glean:
Brewcraft #10 - Dextrose 750g & Maltodextrin 250g
Brewcraft #15 - Dextrose 500g & Maltodextrin 250g & LME 250g = Coopers Brew Enhancer #2
Brewcraft #20 - Dextrose 250g & Maltodextrin 250g & LME...