Cuban Mojito Burgers - Sutter Home Family Vineyards

Ingredients

• 1 large sweet onion, thinly sliced
• 1 tablespoon Colavita Extra Virgin Olive Oil
• 1 tablespoon dark rum
• 1 teaspoon coarse kosher salt
• 1 tablespoon fresh squeezed lime juice
• 1 tablespoon minced fresh mint
• 1 teaspoon sugar
• ¾ cup mayonnaise
• 1 teaspoon kosher salt
• 1 teaspoon fresh ground black pepper
• 2 pounds ground chuck
• 1 teaspoon ground cumin
• 1 garlic clove, crushed
• 3 teaspoons finely grated lime rind
• 2 teaspoons coarse kosher salt
• 2 teaspoons fresh ground black pepper
• Vegetable oil for brushing grill rack
• 6 sesame seed buns, split
• 1 jar pimentos, drained