Ingredients

• 2 to 2.2 lbs boneless, skinless chicken thighs
• Salt
• 1/2 white onion
• 3 cloves of garlic
• Oil
• 25 g tomato paste
• 400 g fire-roasted tomatoes
• 200 g fresh tomato
• 200 g chicken stock
• 10 g Better Than Bouillon roasted chicken base
• 2 chipotle chilies in adobo
• 1 g dried oregano
• 15-20 g cider vinegar
• 5-8 g salt
• Small handful of chopped cilantro stems
• Tostada shells
• Lettuce
• Crema (sour cream with lime)
• Fresh cilantro for garnish