Heat ghee in the pressure cooker using the saute´ function. Add onion and saute´ until translucent. Add minced garlic and cook a few more minutes.
Add remaining ingredients except for tortilla chips.
Close lid and cook for 10 minutes.
Once done cooking use quick pressure release.
Stir the soup and serve in a bowl with crushed tortilla chips and toppings of your choice.
Topping ideas include plain yogurt or sour cream, chopped cilantro, hot sauce, shredded cheese, avocado, jalapeno.