Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: heat butter over low heat in large sauce pan. sweat leaks and onions until moderately soft and translucent. stir in potatoes and stock. season and bring to a boil. simmer until all vegetables are very tender. puree soup to smooth consistency. wash and shred sorrel leaves, garnish on top of soup just before serving.

Target recipe: peel and slice potatoes. chop onions and celery. saute these ingredients in 1 1/2 tablespooons of butter. add boiling water, enough to cover. add salt and bay leaf. boil the veggies until the potatoes are tender. remove bay leaf. put them through a ricer or blender. beat into the potato mixture 2 tablespoons butter. thin the soup with your choice of milk, cream or chicken stock. add salt and pepper to taste. add worcestershire sauce. stir and bring to near boil. serve garnished with parsley and chives.