1. Keep in mind that all oven temperatures vary, so please keep a close eye when you are broiling the vegetables. If you burn them, they will affect the taste of the pozole and you will have to start all over again. You want them charred, but not burnt!
2. There are many varieties of vegan-friendly chicken bases and/or bouillon cubes. If buying bouillon instead of broth, simply mix with water according to the directions for 8 cups of broth. My favorite brands are Edward and Sons and Better Than Bouillon. You can also find imitation chicken bouillon powders at many Asian specialty markets. If you cannot find vegan chicken stock, you can substitute vegetable stock.