An open sandwich, also known as a tartine or bruschetta, is a type of sandwich that has only one slice of bread with toppings piled on top. In some regions, it is also referred to as a "toast" or "bread with toppings." The toppings can vary from cold cuts, cheese, vegetables, or spreads such as mayonnaise, butter, or jam. Some popular variations include the Scandinavian smørrebrød, the French crostini, and the Italian bruschetta. Regardless of its name or origin, an open sandwich is a delicious and versatile alternative to a traditional sandwich and can be customized with a wide variety of toppings to suit any palate.