Easy Lamb Vindaloo — Three Many Cooks

Ingredients

• 6 tablespoons grainy mustard
• 4 teaspoons ground cumin
• 4 teaspoons turmeric
• 1 ½ teaspoons cayenne pepper
• 2 tablespoons red wine vinegar
• 4 tablespoons vegetable oil, divided
• 1 large sweet onion, cut into medium dice
• 12 to 15 garlic cloves, minced
• 4 pounds boneless lamb shoulder, cut into 1 ½–inch cubes
• 2 cans (13.5 ounces each) coconut milk
• Chopped fresh cilantro, optional