In a large pot, sauté the onion in cooking oil until soft.
Add the next eight ingredients, stir, and cover. Cook over medium heat for about 10 minutes, stirring frequently, until the mixture comes to a boil.
Add the next eight ingredients, stir, and bring to a boil.
Reduce heat, cover, and let simmer for about 30 minutes, stirring occasionally, until the vegetables are tender.
Servings: 12 cups