2 tablespoons butter
1 large red onion, chopped
4 to 5 cloves garlic, sliced
1 teaspoon salt
1/2 to 1 tablespoon chopped chives
2 lemons zested and grated, plus juice from 1/2 lemon
1/2 teaspoon chopped dill
1/4 to 1/2 cup white zinfandel
2 tablespoons olive oil
2 tablespoons capers
1 pound halibut cheeks