Turkey Nachos

INGREDIENTS

• 1 garlic clove, finely chopped
• 1/4 teaspoon ground cumin
• 2 to 3 teaspoons finely chopped pickled jalapeño
• Accompaniment: tomato salsa
• 1 1/2 tablespoons fresh lime juice
• 1/2 lb leftover roast turkey meat, shredded
• 2 tablespoons vegetable oil
• 1/2 cup chopped fresh cilantro
• 1 teaspoon dried oregano, crumbled
• 1 (15- to 16-oz) can black beans, rinsed and drained
• 1/4 cup chopped scallion greens
• 3 bell peppers (preferably red and orange), finely chopped
• 2 cups grated jalapeño Jack cheese (8 oz)
• 1 cup sour cream
• 4 oz corn tortilla chips (not low-fat)