<P> A wedge salad is made from a head of lettuce (such as iceberg) halved or quartered, with other ingredients on top . </P> <P> Vegetables other than greens may be used in a salad . Common raw vegetables used in a salad include cucumbers, peppers, tomatoes, onions, spring onions, red onions, carrots, celery, and radishes . Other ingredients, such as mushrooms, avocado, olives, hard boiled egg, artichoke hearts, heart of palm, roasted red bell peppers, green beans, croutons, cheeses, meat (e.g. bacon, chicken), or seafood (e.g. tuna, shrimp), are sometimes added to salads . </P> <P> They are assembled with thick sauces such as mayonnaise . One portion of a true bound salad will hold its shape when placed on a plate with an ice - cream scoop . Examples of bound salad include tuna salad, pasta salad, chicken salad, egg salad, and potato salad . </P> <P> Bound salads are often used as sandwich fillings . They are popular at picnics and barbecues . </P>

6 classification of salad according to their function in the meal