Pea Soup with Mint - Litchfield Farmers' Market

Ingredients

• 3 tablespoons unsalted butter
• 1 medium onion, chopped
• 4 cups low-sodium vegetable broth, divided
• 6 cups fresh shelled peas (from about 6 lbs in pods) or frozen and thawed
• ¼ cup fresh flat leaf parsley
• ¼ cup fresh mint leaves
• Kosher salt and freshly ground pepper to taste
• ¼ cup crème fraîche or sour cream
• 2 tablespoons heavy cream or water
• Chopped fresh chives