There are two main factors that contribute to its success: (1) the smoke point and (2) its taste. To highlight the chili flavor (and any other ingredients you add), it's important to choose an oil with a neutral flavor. You also need it to have a high smoke point to ensure that there's enough heat to instantly cook everything in the bowl. Here are some oils that are neutral in taste and have a high smoke point: - Peanut - Vegetable - Canola - Grapeseed - Rice bran