Tuna
1 stick of butter
grated zest of 1 lime
1 Tablespoon chopped cilantro
1/4 cup lime juice
salt and pepper
4 tuna steaks
Salt and pepper tuna and cook to desired doneness (bake, grill, broil, sear, etc.)
As tuna cooks, melt butter in a small pan.
Add lime zest and bring to a boil.
Remove from heat and add cilantro.
Arrange tuna on plates.
Add lime juice to the butter mixture and pour over tuna.