Kansas Caviar

Ingredients

• 3/4 cup cider vinegar
• 1/2 cup vegetable oil
• 1 tablespoon water
• 1 cup sugar
• 1 teaspoon salt
• 1/2 teaspoon pepper
• 1 teaspoon ground cumin
• 1/4 - 1/2 teaspoon crushed red pepper flakes
• 1 (15 ounce) can pinto beans, rinsed and drained
• 1 (15 ounce) can black beans, rinsed and drained
• 1 (15 ounce) can black-eyed peas, rinsed and drained
• 1 (11 ounce) can corn, drained
• 1 (11 ounce) can Rotel Tomatoes, drained
• 1 (4 ounce) can canned diced green chiles
• 1 small onion, chopped