1. Heat large stockpot over medium-high heat. Coat bottom of pot with avocado oil. Add onions, peppers, and pinch of salt and saute 30-60 seconds until aromatic. Add tomatoes and mineral broth and bring to a boil.
2. Reduce heat to simmer and cook until tomatoes break down and flavors combine. Stir in cilantro, lime juice, and lime zest to taste. Season with salt and pepper, garnish with radishes, and serve hot.