Corn, Maple and Butternut Pumpkin Soup - Maple from Canada

Ingredients

• 2 tbsp + 1 tsp vegetable oil
• 1 medium butternut pumpkin, peeled, seeded and cubed
• 1 onion, thinly sliced
• 2 celery stalks, cubed
• 3 garlic cloves
• 1 ½ oz fresh ginger, chopped
• 6 tbsp + 1 tsp pure maple syrup (preferably dark syrup for its robust taste)
• 4 ¼ cups chicken or vegetable stock
• 1 lb frozen corn
• Salt and pepper, to taste
• ½ cup sour cream
• Chives, to taste