Middle Eastern Chicken Wings

Ingredients

• ["2 kg chicken wings, cut at the joint", "1 1/2 tablespoons tomato paste", "1 small red onion", "1 big red onion", "4 garlic cloves, ground in mortar and pestle", "2 teaspoons mixed Arabic spices (called \"baharat\"" here ( it's a combo of many different spices such as chili powder