Cilantro Garlic Chicken

INGREDIENTS

• 1 (3 inch) piece of fresh ginger, coarsely chopped
• 5 large cloves garlic, coarsely chopped
• 2 teaspoons lemon juice
• 1/4 teaspoon salt
• 2 tablespoons water
• 4 skinless chicken leg quarters, separated into thighs and drumsticks
• 1 tomato, seeded and chopped
• 3 cups lightly packed cilantro leaves and stems
• 2 serrano chiles, or more to taste
• 1 teaspoon tomato paste
• 3/4 teaspoon salt
• 3 tablespoons olive oil
• 1 cup plain Greek yogurt
• 1 tablespoon water, or as needed (optional)