Does what it says on the...jar.
Enough sauce in a jar for three 10inch pizzas (spread it with the back of a spoon). Tastes nice, just doesn't keep in the fridge once opened for more than two or three days tops if you can't use it all at once, which is a bit of a shame. And our local Tesco seems to get very infrequent stocks, so we have to get several jars in when we see it, or go without for weeks. Shopping app seems to think a jar of pasta sauce is a good substitute, which it might, if it wasn't 10 times larger than required.