One thing I always have in my freezer is chipotle pepper sauce. I add it to all kinds of things so I love to have it on hand. I add it to chili, tomato based sauces, soups and even tempeh and tofu marinades.
All you have to do is buy a can of chipotle peppers in adobo sauce, throw it in your food chopper and puree. Once it’s pureed, put in a jar or freezer safe tupperware, or even ice cube trays, and it’s ready whenever you need it.
I find that pureeing my chipotle peppers provides me with a lot more usable product that has a balanced flavor from the first spoonful to the last. There’s still plenty of heat going on too. Just a tablespoon worth is enough to add a subtle smokey heat and two tablespoons gives you a nice spicy chili.