Ernesto Pizza stone - rectangular 30x38cm or round 38cm £9.99 @ Lidl

I have it and use it weekly. Very good product. It doesn't wash well, when stained will stay stained but it doesn't matter. You need to use it at temperature, so it needs to be already hot (225.c) then you put the pizza on. So you need to put lots of flour on the surface (make my pizza on a wooden cutting board) you are going to use to slide the pizza on it as quickly as possible before closing the oven to return to 225.c for 10 to 15 minutes. No more soggy pizzas in the middle, excellent thing to make pizza from scratch. (edited)

No. It would actually take the oven longer to heat up as it also needs to heat the stone. What it does do is make the pizza cook quicker (providing the stone is hot when you put the pizza on it). But most importantly it makes the base crispier. However, I find putting the pizza in a frying pan to crisp the base after its been in the oven even better. (edited)

The day after pan reheated pizza slices are the best!!! I add a tiny bit of water around the edges once the pizza slice has been added to the pan and lid on...crispy base along with toppings nice and soft!!! (edited)