It's homemade hot chocolate mix. We've already made two batches this year. It's one of the easiest, most delightful treats to make. We use Alton Brown's recipe. Bill usually triples it and that lasts 2-3 months.
I think you should try it! The hardest part is finding cocoa, so I'll give you a hint - Penzey's. There. Now you have no excuse. This is amazing, yummy stuff. And have you read the ingredients in manufactured cocoa mix? Last I checked it included many chemicals including partially hydrogenated oils, which you don't ever need to eat.
Also - yes - put just a little bit of cayenne in the mix. You won't taste it, I promise. Cayenne just makes chocolate more chocolatey, as wine makes tomatoes more tomatoey and as balsamic vinegar makes strawberries more strawberry...y.
Up next - I'm going to make something other people tell me is easy and delightful: homemade yogurt.