sentence: cut the celery root into small cubes and hydrate the cubes by putting them in water sentence: toast some walnut pieces on a pan on a medium heat sentence: add 3 parts of mayonnaise 1 part of sour cream some sugar salt black pepper and cayenne to a bowl sentence: pour some lemon juice on it to prepare the dressing sentence: add some freshly chopped tarragon and mix all the ingredients together sentence: cut one apple into cubes and add quartered seedless grapes celery cubes and walnut pieces in a bowl sentence: pour the dressing on the ingredients in the bowl and mix well