Sauce/accompaniment for filet & crabcake?

All great ideas! Decisions, decisions. Thanks!

consider a compound butter - simple, like butter, parsely a bit of finely chopped shallot and sprinkle of cayenne.

I like horseradish as well. But chimichurri would also work; essentially chopped parsley, lots of garlic, olive oil, and some hot pepper flakes. Salt and ground pepper. I like to add a little cilantro too (unless you are feeding cilantro phobics).

Horseradish Creme Fraiche!

1 cup crème fraîche (8 ounces)
1 tablespoon prepared horseradish
1 tablespoon chopped fresh chives
2 teaspoons Sherry wine vinegar
Salt and Pepper to taste

Fold all ingredients together, chill for an hour.