2. Barbecue is to barbecue meat and meat products in charcoal or electric heating device, which is easy to get cold after leaving the fire, and the taste of barbecue will decrease after cooling. In order not to affect the taste of barbecue, it is generally necessary to heat the barbecue. It is generally recommended to use a microwave oven because it is faster and more convenient to heat food. Secondly, you can also put the barbecue in the oven and heat it for about 2-3 minutes respectively.