Nut oils are sometimes used for cooking and preparing food in various restaurants, such as fried items in fast-food restaurants, and may provide a potential source for allergen exposure. In general, nut oils when highly refined are tolerated in patients allergic to nuts. However, due to varied standards in the refining processes, there remains some risk for reaction when allergic individuals consume nut oils, especially crude oil. Gourmet-style peanut oil, however, is cold-pressed and contains a significant amount of protein. Peanut oil specifically has been studied via double-blind oral challenge in peanut-allergic individuals and found to be safe when refined, while crude peanut oil did elicit some clinical reactions. Due to potential variations in protein content between different preparations, it is generally recommended to avoid foods containing peanut oil.62,63