Sweet Pepper & Onion Relish

Name: Sweet Pepper & Onion Relish
Cuisine: American
Ingredients: 6 cups tomatoes, skinned, seeded and diced (first blanch the tomatoes in boiling water for 30 seconds for easy peeling) (a couple of our readers have reported success with using canned tomatoes - see reader comments below); 6 cups red bell peppers, seeded and diced; 4 cups yellow onion, diced; 4 jalapenos, seeded and diced; 2 cups white vinegar; 1½ cups cider vinegar; 5 cups granulated sugar; 2 tablespoons salt; 1 tablespoon cayenne; 4 tablespoons powdered pectin (recommended: Ball's Classic Realfruit Pectin); *See NOTE if relish turns out too runny