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Â· just now. 1  Burger King Cooking Oil. 2  Burger king uses Soybean, Canola, and/or Palm oil to fry their fries and onion rings in. 3  Fruits have sugar, it's natural, but some fruits can even be bad for you. 4  Fruits are sweeter and take less effort to arrange, generally, so I tend to eat more fruits.
Can You Reuse Fry Oil? You shouldn't need to toss the oil after frying a single batch of french fries. Strained, cooled, and kept in a sealed container, the oil is usually good for a couple more deep-fry sessions, boogiebaby says on Chowhound. Naturally there are other factors to consider, as Chemicalkinetics points out. The higher you heat the oil, the quicker it'll degrade.