Ok, I'm writing all that down...

The old standard pattypan variety called various names such as "white bush scollop" grows much larger than most varieties. Not white but very pale colored.

It stays tender enough to eat up to about 5 1/2" in diameter. I have several recipes for stuffing and baking them. Last year I had only one plant and so they never got that big 'cause I was in a hurry to eat 'em. I try to have three varieties in a pot each cut to similar size pieces.