dover sole

Depends on where you are. Hopefully you have a good seafood source--ask them for the best flatfish from your area. Or if there isn't one, the best white-fleshed fish. Just saying "flounder" or "fluke" or "sole" can lead to confusion. They are all flatfish, but some are a lot better than others.

I use flounder more frequently than I use sole because sole can be so expensive. You can use the basic technique with any white, flaky fish filet.

Flounder or fluke are your best bets, but halibut, skate wing or snapper would work also.

It looks like you can substitute other white fish for sole such as flounder, orange roughy or cod. I also saw online that sand dab is another good substitute but I'm not sure how easy that is to find!