This portable oven works as advertised. The first time I used it, I placed the leftover taco meat in a foil-covered glass jar. He heated it up to get warm in about 45 minutes. I have found that it is best to wrap food in foil. It heats two individually wrapped tacos/burritos etc. to the melting point of cheese in 30-40 minutes. I'll put everything I hear 1/2 hour earlier than I want. I was busy and forgot, and after an hour the food was burning my mouth. I think it's best to turn it halfway. A fuse has never blown. Good hot food in the field is great.