Brussels Sprouts Tacos with Creamy Avocado Sauce

Bahan-bahan (4 porsi)

• 1 tablespoon olive oil
• 1 small white onion, peeled and diced
• 1 pound brussels sprouts, halved and ends trimmed off
• 3 poblano peppers, cored and diced
• 2 cloves garlic, minced
• 1 (15-ounce) can black beans, rinsed and drained
• corn or flour tortillas
• 1 batch avocado sauce (see below)
• crumbed queso fresco or cotija cheese
• 1 large ripe avocado, peeled and pitted
• 1 cup loosely-packed fresh cilantro leaves
• 1/2 cup sour cream
• 2 tablespoons lime juice
• 1/2 teaspoon salt
• 1/4 teaspoon ground cumin
• 1/4 – 1/2 teaspoon water