I saw the TechCrunch review of CookThink by Duncan Reiley and was surprised to see that CookThink is based in DC. Techcrunch calls it "Pandora for Recipes'. How it works is that you sign up and you can choose based on ingredient, dish, cuisine, mood. There is also a tag clud that you can click to get your recipe.
Search through or browse all the recipes. I searched for Curry +stew and it gave me a recipe for Simmered Red Curry Fish. it gave me 2 accompanying dishes ( simple whole wheat couscous- my wife will love the whole wheat part and simple pearled barley) and also 2 related tips - how to slice zucchini and Onion.
Commenters on the TechCrunch post also suggest the following sites :
Being a DC company and privately funded I wish them the best and hope to meet the founders at a local event.