The oil in the fry vats, when it got too old for fries, was put into the pie or fish vats. > Its also important to know that fries are never ever cooked in the

The oil in the fry vats, when it got too old for fries, was put into the pie or fish vats. > Its also important to know that fries are never ever cooked in the same grease used for chicken nuggets, fish filets, etc. I'd be curious to know what that tastes like if anyone has every broken the rules and tried it The fries would pick up the flavor of the fish or pies and taste weird. Since the vat temperatures are different, and the vat sizes are different, the fries would not come out consistently fried either.