Artichoke hearts are readily available in cans and jars in many countries, and are increasingly used in the making of snack dips. Many national chain restaurants in the USA have some variety of artichoke dip, which is usually mayonnaise-based. One easy variation on the creamy artichoke dip is jokingly called the Artichoke Heart Attack, owing to the amount of mayonnaise and Parmesan cheese it contains.