Today I saw an apple labeled something like "tart, hard, good for cooking." Something about it just looked delicious. I ate it raw, and I think it might have been the best apple I've ever had. I immediately went back and bought a few more (it was a Grenadier apple). Are there any other lovers of real, honest-to-goodness, pucker-your-face tart apples out there? I am blessed with several great farmer's markets, and I'm curious which varieties you like, and whether you pair the apples with anything or cook them in a way that doesn't undermine their perfect sour-sweetness. I'm thinking they might be awesome on a sandwich with creamy, soft cheese.