The crossword solution for the term 'Basic Salad Ingredient' is 'Cuke', which is a four-letter word. Cuke is a shortened form of the word cucumber, which is a vegetable that is commonly used as an ingredient in salads. Cucumbers are usually sliced and added to salads for a crunchy texture and a mild flavor. They are also a great source of vitamins and minerals, making them a healthy addition to any salad.