A club sandwich, also called a clubhouse sandwich or double-decker, is a sandwich

Sandwich

A sandwich is a food item, typically consisting of two or more slices of :bread with one or more fillings between them, or one slice of bread with a topping or toppings, commonly called an open sandwich. Sandwiches are a widely popular type of lunch food, typically taken to work or school, or...

 with two layers of fillings between 3 slices of toasted bread. It is often cut into quarters and held together by hors d'œuvre sticks.

The traditional club ingredients are turkey on the bottom layer, and bacon

Bacon

Bacon is a cured meat prepared from a pig. It is first cured using large quantities of salt, either in a brine or in a dry packing; the result is fresh bacon . Fresh bacon may then be further dried for weeks or months in cold air, boiled, or smoked. Fresh and dried bacon must be cooked before eating...

, lettuce

Lettuce

Lettuce is a temperate annual or biennial plant of the daisy family Asteraceae. It is most often grown as a leaf vegetable. It is eaten either raw, notably in salads, sandwiches, hamburgers, tacos, and many other dishes, or cooked, as in Chinese cuisine in which the stem becomes just as important...

, and tomato

Tomato

The word "tomato" may refer to the plant or the edible, typically red, fruit which it bears. Originating in South America, the tomato was spread around the world following the Spanish colonization of the Americas, and its many varieties are now widely grown, often in greenhouses in cooler...

 on the top, sometimes specifically named a turkey club. Other common club sandwiches generally vary the bottom layer, for example a "chicken

Chicken (food)

Chicken is the most common type of poultry in the world, and is prepared as food in a wide variety of ways, varying by region and culture.- History :...

 club" or a "roast beef

Roast beef

Roast beef is a dish of beef which is roasted in an oven. Essentially prepared as a main meal, the leftovers can be and are often served within sandwiches and sometimes is used to make hash...

 club". Variations might include ham (instead of bacon), egg and/or additional cheese slices. As with a BLT sandwich, the club sandwich is usually served on toasted bread

Toast

Toast is bread that has been browned by exposure to radiant heat. This browning reaction is known as the Maillard reaction. Toasting warms the bread and makes it firmer, so it holds toppings more securely...

. Mayonnaise

Mayonnaise

Mayonnaise, , often abbreviated as mayo, is a sauce. It is a stable emulsion of oil, egg yolk and either vinegar or lemon juice, with many options for embellishment with other herbs and spices. Lecithin in the egg yolk is the emulsifier. Mayonnaise varies in color but is often white, cream, or pale...

 and mustard

Mustard (condiment)

Mustard is a condiment made from the seeds of a mustard plant...

 and sometimes honey mustard are common condiment

Condiment

A condiment is an edible substance, such as sauce or seasoning, added to food to impart a particular flavor, enhance its flavor, or in some cultures, to complement the dish. Many condiments are available packaged in single-serving sachets , like mustard or ketchup, particularly when supplied with...

s. The sandwich is commonly served with a side portion of either coleslaw, or potato salad, and often accompanied by a pickle. The coleslaw or potato salad is often reduced to a "garnish" portion, when the primary side item is an order of French fries.

One popular theory is that the club sandwich was invented in an exclusive Saratoga Springs, New York

Saratoga Springs, New York

Saratoga Springs, also known as simply Saratoga, is a city in Saratoga County, New York, United States. The population was 26,586 at the 2010 census. The name reflects the presence of mineral springs in the area. While the word "Saratoga" is known to be a corruption of a Native American name, ...

, gambling

Gambling

Gambling is the wagering of money or something of material value on an event with an uncertain outcome with the primary intent of winning additional money and/or material goods...

club in the late 19th century.

The sandwich is known to have appeared on U.S. restaurant menus as far back as 1899.