The term 'hard roll' can refer to two different food items. The first is a SALAMI, which is a type of cured sausage made from ground pork and beef, flavored with garlic, salt, and spices. The second is a BAGEL, which is a type of bread roll that is boiled and then baked, giving it a chewy texture and a crisp crust. Both of these items are popular in many cultures around the world and are often served as part of a meal or snack.