I keep looking at the positively pornographic photo of Daniel Boulud's "Pig Knuckles with Endives" in one of his fine cookbooks. It looks unctiously delicious. But I can't seem to find pig knuckles in any markets: I've tried Korean, Mexican, Vietnamese, and Rich White People markets all over Los Angeles. (There is no such thing as a proper butcher where I live).
Just what part of the pig is the "knuckle" ?
Here's a picture of one (no, not Boulud's... this one is Filipino):