Chicken Tinga Tacos with Rice and Avocado

Ingredients

• 1 cup Mathatma® White Rice
• 1 small red onion, thinly sliced
• 1/3 cup apple cider vinegar
• 1 tsp sugar
• 1 tsp salt, divided
• 2 tbsp olive oil
• 1 small cooking onion, chopped
• 2 cloves garlic, minced
• 1 tsp ground cumin
• 1 can (14.5 oz) diced tomatoes
• 2 tbsp chipotle in adobo, chopped
• 1 cup cooked chicken, shredded
• 1/2 tsp pepper
• 3 tbsp lime juice
• 12 corn tortillas, warmed according to package directions
• 1 ripe avocado, halved, pitted and sliced
• 1/2 cup feta, finely crumbled