Learn how to preserve your chili peppers in olive oil so you can enjoy them longer. They're like summer in a jar.
Roast the peppers in a broiler or on a grill over medium heat until the skins are bubbly and blackened, about 15 minutes. For other methods, see How to Roast Chili Peppers. Be sure not to overcook. Remove and allow to cool. You can also place them into paper bags and allow them to steam to help loosen the skins.
Will last a couple months or longer. If using garlic or herbs to flavor the oil, it will only last a week. Keep refrigerated.