We've started to support raw food searches at www.foodferret.com
Select raw food in the cooking section - near the bottom of the search form. We recommend then adding an ingredient in the must include list, or add alcoholic drinks to the must exclude list to remove most of the cocktail recipes which are technically raw.
It's not perfect yet, due to technical difficulties in recognizing raw recipes, but we hope people will find it useful. We'd love to get some feedback so we can improve this feature.