wonder if this would work for sweet potato fries. - A "perfect" technique for baked oven fries. A pinner says: "Seriously perfect technique. Some of the best fries I've ever eaten. And they didn't come out of a deep-fryer! They came out of my oven!
In a small Ziplock bag: cup half and half (milk works too), 1 Tbsp sugar, 1 tsp vanilla. Insert that bag into a gallon Ziplock filled with ice and salt. Shake the bag for five minutes. Then remove the smaller bag which should have turned into ice cream!