Samaki Wa Kupaka (Swahili-Style Grilled Fish with Tamarind)

Ingredients

• 1 (2–3-lb.) whole fish, such as red snapper, porgy, or striped bass, cleaned
• Kosher salt and freshly ground black pepper, to taste
• 6 cloves garlic, minced
• 2 green birds’-eye chiles, stemmed, seeded, and minced
• 1 (2") piece ginger, peeled and minced
• Juice of 2 limes
• 1 cup canned coconut milk
• 1⁄4 cup tamarind paste or 2 tbsp. tamarind concentrate
• 1⁄2 tsp. curry powder
• 1⁄2 tsp. ground coriander
• 1⁄4 tsp. cayenne pepper
• Canola oil, for brushing