Potato, Green Cabbage, And Leek Soup With Lemon Crème Fraîche

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Details

13 Ingredients

• 1/2 cup crème fraîche or sour cream
• 1 Tbsp fresh lemon juice
• 1/4 tsp finely grated lemon peel
• 2 Tbsps (1/4 stick) butter, divided
• 1 Tbsp extra-virgin olive oil
• 6 cups diced green cabbage (1/2-inch dice; from about 1/2 medium head)
• 3 cups chopped leeks (white and pale green parts only; 3 to 4 large)
• 3 large garlic cloves, pressed
• 3 cups 1/2-inch cubes peeled Yukon Gold potatoes (about 1 1/4 lbs)
• 1/2 x 2-inch piece Parmesan cheese rind (optional)
• 1 Turkish bay leaf
• 6 cups (or more) low-salt chicken broth
• 2 Tbsps chopped fresh chives (for garnish)