Radish Top Soup

This recipe shared by WE CSA member Elaine. Thanks Elaine!
Don't throw out your radish greens. Believe it or not, those fuzzy leaves can be transformed into a smooth green soup, with a hint of watercress flavor.

• 6 Tb butter
• 1 cup chopped onions or leeks
• 8 cups loosely packed radish leaves
• 2 cups diced peeled potatoes
• 6 cups liquid (water, vegetable broth)
• Sea Salt
• 1/2 cup cream (optional)
• Freshly ground pepper

Melt 4 tablespoons butter in a large saucepan, add onions or leeks, and cook until golden, approximately 5 minutes. Stir in radish tops, cover pan, and cook over low heat until wilted, 8-10 minutes. Meanwhile, cook potatoes until soft in liquid along with 1 teaspoon salt. Combine with radish tops and broth, and cook, covered, for 5 minutes to mingle flavors. Puree finely in a food processor. Add cream if desired. Season to taste with butter, salt and pepper.