A handful of fresh mint brightens peas and pearl onions, making this dish an ideal side for a rich meal.
Cut an X in stem end of each onion. Cook in salted boiling water for 1 to 2 minutes. Drain, and peel.
Heat butter and water in a pan over medium-high heat. Add onions, and cook for 4 minutes. Stir in peas and 3/4 teaspoon salt, and cook for 2 minutes. Stir in mint. Serve immediately.