Sorry. Perhaps I should've mentioned that a lot of the frozen pizzas I've had (and some of the chilled ones) have said to cook them at 180C. 
Big difference between that and 250C, even allowing for the oven here being approx 25C below what the setting says it is. Hence the improved pizzas.

Big difference between that and 250C, even allowing for the oven here being approx 25C below what the setting says it is. Hence the improved pizzas.


