Halkidiki olives are a much larger variety of olives that are commonly grown in northern Greece. They are round and plump, with a mild, buttery flavor and a crisp texture. Halkidiki olives are usually cured in brine and are often stuffed with a variety of fillings, such piri piri pepper, garlic, almond, lemon, orange, jalapeno, pimento paste, pickle, and many more. They are also commonly used in Greek salads or served as a garnish.