Roasted Carrot Soup

Ingredients

• 1 lb. carrots, peeled and cut into 3-inch lengths
• 1 Tbs. olive oil
• 1 Tbs. unsalted butter
• 1 shallot minced
• 1/2 medium onion, diced (to yield about 3/4 cup)
• 1 large rib celery, diced (to yield about 1/2 cup)
• 1 Tbs. minced fresh ginger (from about 1/2-inch piece, peeled)
• 2 cups homemade or low-salt vegetable broth
• 1 tsp. kosher salt
• 1/8 tsp. ground white pepper
• Chopped fresh chives or chervil for garnish