Title: McChicken
Content:  The McChicken is a chicken sandwich sold by the international fast food restaurant chain McDonald's. The sandwich consists of a toasted wheat bun, a breaded chicken patty, shredded lettuce, and mayonnaise.
Title: List of McDonald's products
Content:  A McChicken is a mildly spicy chicken sandwich which is also offered in a spicier variant (the Hot n' Spicy) in some markets. The sandwich is made from 100% ground white meat chicken, mayonnaise, and shredded lettuce, on a toasted bun. A full-size version was introduced in 1980, later removed, and reintroduced in 1988. In some markets, it is not spicy, and in others, a cajun spiced version is also offered. It remains one of the biggest sellers, just behind the Big Mac. The larger sandwich was replaced with the Crispy Chicken Deluxe in 1996, and brought back in 1998 in the current smaller size, and marketed as the Cajun (Style) McChicken. In Australia, the average serving size for a McChicken is 185 g. In Canada, it remains a full-size sandwich, while the US' smaller version is sold there as the Junior Chicken.
Title: McChicken
Content:  The sandwich, originally introduced in 1980, proved to be a sales disappointment and was later replaced with the highly successful Chicken McNuggets. But following the success of McNuggets, the McChicken was reintroduced in 1988. But again, McDonald's removed the McChicken from its menus in the United States on September 26, 1996, and it was replaced with the Crispy Chicken Deluxe, which was part of McDonald's ill-fated Deluxe line of sandwiches. But once again, the McChicken was brought back gradually towards the later months of 1997, due to overwhelming letters and petitions. Additionally, in the United States, the sandwich is somewhat smaller than it was previously, as it is now on the Dollar Menu & More (previously just the Dollar Menu), which offers various food products starting at US$1.00. The meat of the McChicken sandwich used to be 50% white meat and 50% dark meat. Viewed in April 2015, McDonald's website states that the McChicken contains a blend of dark and white meat chicken.
Title: McDonald's Deluxe line
Content: The Grilled Chicken Deluxe sandwich replaced the McGrilled Chicken Classic sandwich and had light mayonnaise, lettuce and tomatoes; additional sauces to replace the mayo were available. Additionally, a Crispy Chicken Deluxe sandwich, which replaced the McChicken, was made available. These sandwiches were targeted to the female and health-conscious markets. The Grilled Chicken Deluxe and Crispy Chicken Deluxe sandwiches were brought back in 2015. This time, they are made on an artisan roll instead of the potato flour bun and replaced the Premium Chicken sandwich line instead of the McChicken. 
Title: McChicken
Content:  In Hawaii, the Ala Moana Shopping Center McDonald's sells the McTeriChicken variant, a McChicken with teriyaki ("teri") sauce. "Teri" is heavily used in Hawaii and has been added to various McDonald's sandwiches, such as the McTeri Burger. In other US states, there is also another variant of the McChicken Sandwich called the Cheddar Onion McChicken, which is a McChicken with caramelized onions and a slice of white cheddar cheese, both on a toasted bun. In most countries outside of the US (such as India ), the McChicken comes on a sesame-seed bun and is not spicy. In Canada, the UK, Ireland, Australia (where it originally appeared as a promotional menu item but, due to its popularity, became a full-time menu item) 
Title: McChicken
Content:  New Zealand, the McChicken also comes on a sesame-seed bun but with lettuce and a seasoned mayonnaise sauce called "McChicken Sauce". In the UK, the Junior Chicken is sold as the Mayo Chicken. In Canada, the low-priced chicken option is called the Junior Chicken, which generally costs C$1.99 (as an offering on McDonald's Canada's "Value Picks" menu), but the sandwich is only lightly spiced. It is referred to as the cousin of the Canadian McChicken, which in turn is more akin to the US' Premium Crispy Chicken sandwich (though the latter is served on an artisan roll, instead of the sesame seed bun of its Canadian counterpart). McDonald's restaurants in Spain serve a variant with barbecue sauce rather than mayonnaise.
Title: List of McDonald's products
Content: Chicken Fajita – chicken, cheese, red and green bell peppers, and diced onions in a flour tortilla. Comes with Picante sauce packets on request, which are available in mild and spicy. Available in only a few markets. ; Artisan Grilled Chicken – in the first week of April 2015, McDonald's introduced a redesigned grilled chicken patty, replacing the Premium Grilled Chicken sandwich, which contains "fewer ingredients", and those that remain can be found in consumer's "own kitchens". The sandwich sits atop the artisan roll first seen with the Bacon Clubhouse and is the last of the full-size chicken sandwiches to switch to this bun. 
Title: McDonald's Premium line
Content:  McDonald's line of larger chicken sandwiches (The Classic, Club and Ranch BLT) were introduced in July 2005 as part of McDonald's menu revamp. The classic includes Lettuce, Tomato, and Mayo. The Club also has Lettuce Tomato and Mayo, but also comes with Swiss cheese and bacon. The ranch BLT comes with a creamy ranch sauce, Bacon, Lettuce and Tomato. All three can be chosen with either buttermilk crispy or grilled chicken and all are served on a honey wheat roll. A Spicy Chicken sandwich, with chipotle spices in the breading, was part of the premium line for a limited time in 2006. It was made the same way 
Title: International availability of McDonald's products
Content:  Mango) and Spicy Thai. As in the United States, the McRib periodically appears on the menu for limited runs. The crispy chicken patty used in the McChicken sandwich sold in Canada uses both white and dark meat – it is essentially the same size and taste as the original McChicken that first appeared in the US in 1980. Seasonal items previously available in McDonald's in Canada include the McLobster, a lobster roll, available in the Maritime Provinces, called McHomard in French. Regionally a blueberry-shortbread McFlurry is also available. Discontinued items in Canadian McDonald's include pizzas, including a calzone-style "McPizza." The McFlurry Originated in New Brunswick.
Title: List of McDonald's products
Content:  Grilled Chicken Deluxe – this sandwich has the same ingredients as the Premium Crispy Chicken Deluxe but has a marinated, grilled chicken breast at its center. It has been sold under various names since 1996, when it was introduced as the Grilled Chicken Deluxe, and had its name changed to the Chicken McGrill in 1998. It was replaced with a Premium chicken sandwich in July 2005, which was in turn replaced with the Artisan Grilled Chicken in 2015. It is also available in India and has at times been available in Canada.

Question: what is on a mcchicken sandwich from mcdonalds?
Answer: a breaded chicken patty.
shredded lettuce.
mayonnaise.
breaded chicken patty.
toasted wheat bun.
a toasted wheat bun.