Juice of one lime
2 tablespoons coconut oil (set in a warm part of your kitchen to turn liquid)
2 garlic cloves, crushed
Grated zest of lime (zest first using a rasp style grater then squeeze for juice)
2 teaspoons drained capers
4 (5 to 6 ounces each) halibut steaks (about 3/4 inch thick)
Whisk lime juice, olive oil, crushed garlic cloves and grated lemon peel in small bowl to blend. Season vinaigrette to taste with salt and pepper. (Can be prepared 1 hour ahead. Let stand at room temperature.)
Prepare grill (medium-high heat) or preheat broiler. Season halibut steaks with salt and pepper. Brush fish with 1 tablespoon vinaigrette, dividing equally. Grill or broil halibut steaks until just cooked through, about 4 minutes per side. Transfer fish to plates. Rewhisk remaining vinaigrette; pour over fish. Garnish fish with capers and serve.