Appetizer stick is a popular snack that consists of CELERY, which is a 6-letter vegetable. It is usually served with a dip or spread such as cream cheese, peanut butter, or hummus. The CELERY provides a crunchy texture and a mild flavor that pairs well with the dip. Appetizer sticks are a great way to add some extra nutrition to a meal or snack. They are also a fun and easy way to get kids to eat their vegetables.