1. Preheat the oven to 200 degrees Celsius. Before putting the pizza in the oven, be sure to preheat the oven to the right temperature. This method is especially effective if you want to heat the whole pizza. Otherwise, if you put it in the oven too early, the heated pizza will soften where it shouldn't. Only by proper operation can the original flavor of pizza be preserved.

2. Put the pizza in the baking tray and put it in the oven. If you have a ceramic baking tray, so much the better, because the ceramic structure can make the food heated evenly. If not, you can also use a baking tray or a baking tray.

If some ingredients on the pizza look stale, get rid of them before putting them in the oven.

You can cut some tomatoes, basil, mushrooms or other fresh vegetables on the pizza. You can also pour some olive oil or fresh cheese on it.

4. Heating15min. Always observe the situation in the oven. When the cheese begins to bubble and brown spots appear, the pizza is hot. Then you can take the pizza out of the oven and enjoy it.

Second, heat the pizza with a toaster.

1. Preheat the toaster to 200 degrees Celsius. Before you put the pizza in, you must preheat the toaster, otherwise the internal structure of the pizza will be destroyed. But as long as it is done properly, the bottom of the hot pizza is crisp and there will be hot bubbles on it.

Put the pizza in the toaster. Most toasters are small, so this method may only be suitable for heating one or two pizzas. If you want more hot pizza, you must serve it several times.

3. Heating 10 min. Pay attention to the inside of the toaster to see if the cheese begins to foam and melt. If so, the pizza is almost hot.