Spiced Mango Chutney

Ingredients

• 4-5 large champagne (ataulfo) mangoes
• 1 cup sugar
• 1 teaspoon red mustard seeds
• 1 teaspoon yellow mustard seeds
• 1/3 cup fresh ginger, peeled and minced (1.5 ounces)
• 3 medium chili peppers, seeds and ribs removed
• 1 small onion, minced (about 3/4 cup)
• 1 cup apple cider vinegar
• 1 teaspoon salt
• 2 cloves garlic, peeled and grated