My fickle mistress, where upon doth thou lie?
I read on here that Clark's in brooklyn heights made their own, but when I asked the (very gruff) waiter said they do not. Perhaps it is still quite good (not canned) but I didn't order it.
The best I know of is Thomas Ham and Eggery in nassau county, anywhere in brooklyn or queens? I'm gonna go post this on manhattan now too.