Capers.

Capers are really strange and yummy.  They are used to season mainly European food, especially from France, Greece, and Italy.  They are exceptionally salty and a little bit bitter, because they are packed in salt or vinegar, which you rinse off before eating.  They go well with olives, and although some peole may not like them, they are very yummy to others.

Capers are the immature bud of the caper bush and are native to the Middle East and Mediterranean, where they are mainly used.  They go well with fish, lemons, and other salty foods, but you shouldn't use too many because their flavor is very strong.  Any time you need your salt fix, look to capers, yet another strange and yummy food.