When it comes to Indian curries most are vegetarian but when you're vegan and looking for a curry recipe you'll find that many use yogurt, butter, ghee, or paneer. These are all dairy products. If you go to an Indian restaurant to order curry look out for these ingredients. Naan and chapati also contain dairy in the dough. Chana Masala is a typical vegan curry that is almost always vegan since it doesn't use butter. Many Indian dishes use oil instead of butter, so if you're eating out at an Indian restaurant ask your server if oil is used.