A sandwich is a food item typically consisting of two slices of bread with various fillings in between. Common fillings include meats, cheeses, vegetables, and spreads. Sandwiches can be served cold or hot and are popular for meals and snacks due to their convenience and versatility. The concept of a sandwich is believed to have originated from the Earl of Sandwich, who requested meat served between slices of bread so he could eat without interrupting his gambling. Today, sandwiches come in many forms, including submarine sandwiches, wraps, and paninis, making them a staple in many cuisines worldwide.