Indian Spiced Chilled Minted Pea Soup

Name: Indian Spiced Chilled Minted Pea Soup
Ingredients: Chilled Minted Pea Soup, adapted from Daniel Patterson of Coi, San Francisco; 2 cups buttermilk; 4 cups shelled fresh or frozen green peas, plus extra for garnish; 10 fresh mint leaves; salt, to taste; freshly ground black pepper, to taste; Indian Spiced Oil for garnish (recipe follows); Indian Spiced Oil, not used in the original version at Coi; 1 cup olive oil; 1 tablespoon cumin seeds; 4 garlic cloves, peeled and crushed; 2 quarter sized slices fresh ginger root, slightly crushed; 2 tablespoons minced onion; 2 Thai green or Serrano chilies, minced; 2 tablespoons cilantro, minced