Salt and white pepper to tas Croutons Brown onions to a light golden color in butter in a saucepan. Clean leeks well and slice. Peel potatoes and slice. Add leeks, potatoes, ham bone, thyme and stock (or water) to onion. Cover and simmer until potatoes are very soft. Remove ham bone, discard. Cool potato/leek mixture slightly. Puree in a food processor or blender and return to pot. Add cream and cook a few minutes longer. Season with salt and pepper to taste. Serve with croutons. Makes about 6 servings.