1. Reheat the pizza in the oven

Preheat the oven to 200 degrees Celsius. Always preheat the oven to the right temperature before putting the pizza in the oven. This works especially well if you're heating the whole pizza. If you put it in the oven too early, the heated pizza will be soft where it shouldn't be. Only by doing this properly can you preserve the original flavor of the pizza.

If you have a ceramic baking sheet, it's even better, as the ceramic is built to heat the food evenly. If you don't have one, a baking sheet or dish will also work. Keep an eye on the oven as it heats up. When the cheese starts to bubble and brown spots appear, the pizza is ready. Then you can remove the pizza from the oven and start enjoying it.

2. Heat the pizza in the toaster oven

Be sure to preheat the toaster oven before putting the pizza in. When done properly, a warmed pizza crust is just crunchy and will have hot bubbles coming out of it. Put the pizza in the toaster oven. Most toaster ovens are small, and this method only works for heating one or two slices of pizza.

3. Reheat pizza in a skillet

Heat a cast-iron skillet over medium heat. This method is good for heating pizzas that have a thin crust and are a little soft. If you don't have a skillet, a pan will work instead. Place the pizza in the skillet and cover. The purpose of the lid is to melt the cheese and heat the toppings on the top of the pizza, while at the same time crisping up the crust.

Heat until the cheese starts to bubble. Open the lid of the pan to see if the pizza is warmed up. If the cheese has started to melt and the crust is crispy, it's ready to serve from the pan. If the cheese has melted but the bottom of the pie is still limp, then heat it uncovered for a few more minutes.

4. Warming pizza in the microwave

Warming pizza in the microwave isn't a great idea, so try to use other methods unless you have to. A microwaved pizza will be limp and won't taste very good. You should not microwave for too long. This is done to minimize damage to the pizza, so don't heat it too long.

How to store pizza:

Be sure to treat the pizza a little before putting it in the fridge. Putting a pizza directly into the refrigerator can cause it to become limp when you take it out again, this is because the moisture in the refrigerator penetrates the pizza. The thinner the crust, the more moisture will seep in and the softer the pizza will be. So be sure to treat your pizza before storing it.

If you're putting the pizza on a plate, seal the plate with plastic wrap; if you're putting it in a container, put a lid on it. If you'll be eating it right away, put the pizza in the refrigerator. Putting the pizza in the refrigerator lowers its temperature, and the pizza will be less likely to spoil or become stale.

If it will be stored for two days or more, put the pizza in the freezer. The longer the pizza sits in the freezer, the more susceptible it is to moisture. Instead of placing it on a plate at this point, place it in an airtight container lined with extra paper towels. It can be stored for months with this method.

Treat it before reheating, too. Pizza should not be reheated as soon as you take it out of the refrigerator. To not ruin the flavor of the pizza, leave it on the kitchen counter first and let it come back to room temperature.