Where are you? Where do you want some from? Do you know any Italian gardeners? I grow PP variety for the paddles and know of some feral stands.
What you want is a really big paddle. ..and the guy in Progress Ave Beachmere has a huge paddle growing. Biggest I've seen. Along the beach here is a feral stand as there is on Red Beach on Bribie Island.
Not much fortunately but some growth.
However I do suggest a walk around New farm will get your a paddle. Just ask the home owners when you spy one.
There are many varieties of PP and there is one or two that aren't weed declared.
Italian aren't into the culinary paddles when the Mexicans are.