Sweet Potato Steaks with Grilled Salsa

Ingredients (for 4 servings)

• 1 ear — corn husk and silks removed
• 0.5 whole — onion thickly
• 1 whole — jalapeño chile
• 3 tbsp — lime juice
• 1 tsp — chili powder
• 0.5 tsp — garlic powder
• 2 whole — sweet potatoes
• 0.5 whole — a 15-oz. can no-salt-added black beans
• 0.5 whole — an avocado
• 0.25 cup — cilantro
• 0 whole — Sea salt
• 0 whole — black pepper
• 0 whole — Cholula hot pepper sauce