In a medium skillet, set over medium heat, add a few tablespoons of oil. When warm, add the onion wedges and cherry tomatoes and allow to caramelize on each side for about 2 to 3 minutes. Next, add the pepper, garlic cloves, cumin, tomato paste and soy sauce. Mix together until combined. Pour in the beer or broth and bring to a simmer; cook for about 3 to 5 minutes until slightly thickened.