Fragrant Cauliflower

Name: Fragrant Cauliflower
Ingredients: 1 small head cauliflower, trimmed and cut into florets; 1/2-inch piece of ginger, peeled; 2 garlic cloves, peeled; 1 serrano chili pepper, seeds removed if less heat is desired; 1/4 cup fresh cilantro, plus more for garnish; 2 tablespoons vegetable oil; 1/2 yellow onion, chopped; 1/8 teaspoon turmeric; 1/4 teaspoon kosher salt; 1/8 cup fresh mint leaves, chopped, plus more for garnish