In cooking, what exactly is a 'cup'?

I’d bet outside the US you can get a set of nested 5, 10, 25, and 50 mL spoons and sets of 50, 100, and 250 mL cups. And pyrex 250 and 500 mL cups. Maybe even a 1 litre one also.

No gas marks that I’ve seen, but non-convection ovens abound, for little more reason that all the cookbooks on everyone’s shelves are written for non-convection ovens. :smack: