Regional Speciality

A Food Trope, this is a specialty of a place or country. It may be Foreign Queasine, but it's just as likely that a character will fall in love with it at first bite. The well-traveled may introduce it to their family and friends, as will cooks trying to impress. Hilarity may ensue if they haven't cooked it before.

Some stories use this as part of the plot - if it's unique to a specific restaurant, getting the word out is a sure-fire way of ensuring a business is a success. "Come here! you won't find this anywhere else!"

Examples that are focused on how awful the concoctions are go in Foreign Queasine - this trope is more about invoking the foreign, the rare and/or the exotic.

Film

 * Fried Green Tomatoes at the Whistle Stop Cafe
 * Mystic Pizza

Literature

 * All Creatures Great and Small: James Herriot recounted an unusual way of eating Christmas cake in the Yorkshire Dales; with crumbly Wensleydale cheese and a draught of raw whisky.
 * Eat Pray Love by Elizabeth Gilbert. In the section on her holiday in Italy, she recounts her experiences with their food. One sequence has her and a friend going to a back-alley pizzeria in Naples to taste their pizza. They immediately order another; her friend says that all other pizza is Ruined FOREVER.
 * In The Last Continent Rincewind is offered a "Meat Pie Floater", a meat pie suspended in thick pea soup with tomato ketchup according to taste (no honestly, it's real! as an Ecksian regional delicacy. Rincewind ponders that all of the "Regional Delicacies" that he's been offered in his travels seem to be the kind of disgusting and inexplicable dishes that someone would only concoct while drunk which are then foisted upon unsuspecting tourists. It's a regional delicacy because no-one else in the world would be crazy enough to eat it.
 * In The Hunger Games Peeta is a second-generation professional baker and he expounds on the regional breads in sufficient detail that fans have been able to make them.

Video Games

 * Street Fighter IV: Used in El Fuerte's ending,
 * Freshly-Picked Tingle's Rosy Rupeeland: Regional specialties are hard-to-brew but high-selling condiments.

Real Life

 * Africa
 * Asia
 * Korea
 * Kimchi, the generic name for a variety of pickled dishes that usually contain cabbage and onions, plus other vegitables. The pickling brine becomes fermented as it ages.
 * Sometimes kimchi brine fizzes like seltzer water. Mmm, cabbage soda pop. Chunky cabbage soda pop.
 * In an episode of M*A*S*H, Frank sees two Korean men burying a Kimchi pot and thinks they're planting a bomb.
 * Can't remember the name, but if you're in Korea, get some larval octopus. Served so fresh it's still alive. It's an affordable delicacy, often served with higher priced multi-course meals (the kind that can feed six people, and are served over the course of two hours). Don't forget to have it with the Koch'ujang.
 * Australia and New Zealand
 * Vegemite
 * Europe
 * England
 * Heston Blumenthal's The Fat Duck, offering such things as "Nitro-Scrambled bacon and egg ice cream" and "Salmon poached in liquorice".
 * Marmite, the British equivalent of Australia's Vegimite. It's a yeast extract that is a by-product of beer brewing. Of all popular foods, it may be the definitive example of the Love It or Hate It trope, as demonstrated in this NSFW ad.
 * Scrumpy, made in the southwest, is a highly alcoholic apple cider. In fact, it's so strong that most pubs no longer serve full-strength scrumpy because people tend to become violently drunk very quickly.
 * In west-central England, there is a certain dish made of ground pork, liver, onions and tomatoes formed into meatballs and served in a special sauce. They are called by a name that is also a homophobic slur. The leading brand name that manufactures this dish is Mr. Brains.
 * They are called faggots. West-central England has many colourful words used as homophobic slurs but 'faggot' is mostly an American usage.
 * North-west England gives the world pie and peas. The pie is usually filled with minced beef and potato, often highly peppered, and the peas are mushy peas; dried peas soaked overnight and boiled to a thick, green, lumpy paste. This is obviously a first cousin of the Australian pie floater.
 * London has pie, mash and liquor. Beef pie with mashed potatoes, and a sauce made from the water used to stew eels (which are also available in pie and mash shops), thickened and coloured an improbable luminous green with parsley. It is surprisingly tasty but you will be hard-pressed to find it in the touristy areas.
 * Ireland
 * Champ (mashed spuds with spring onions, butter, milk and salt) in Northern Ireland. Irish Stew and the Ulster Fry, too.
 * Italy
 * The 1996 movie Big Night revolves around the limited palates and opinions of 1950s Americans towards authentic Italian food. (If it didn't have marinara sauce, it wasn't thought to be authentically Italian.) The timballo—called a timpano in the movie—in the third act is a thing of beauty.
 * Scandinavia
 * Lutefisk—wind-dried cod fermented in lye. Yummy.
 * Scotland
 * Haggis, of course. The unspeakable bits of a sheep mixed with oatmeal and pepper, stuffed into the sheep's stomach ('paunch') and boiled. Better Than It Sounds.
 * Switzerland
 * Swiss Chocolate
 * North America
 * Canada
 * Poutine (fries with gravy and cheese curds) in Canada.
 * Donuts and coffee aren't strictly Canadian, but no true Canadian can say that they've never heard of Tim Hortons.
 * Mexico
 * Mexican food. Can obviously be found in Mexico, but very good authentic Mexican food can also be found in American cities such as San Diego, Los Angeles, Dallas, and Phoenix.
 * USA
 * Applejack, a North American cousin to Scrumpy, is an extremely alcoholic variety of apple cider produced by freezing the water out of normal cider steps at a time, leaving the alcoholic juice behind. This turns a drink with less than 10% alcohol by volume into a 50% ABV monster. Fun Fact: During the colonial period of the USA's history, road construction crews in New Jersey were paid in Applejack, which rose to its alternative nickname, "Jersey Lightning."
 * Thin crust pizzas in New York City.
 * Deep dish pizzas in Chicago.
 * Philly CheeseSteak
 * From Michigan's Upper Peninsula: Fudge, especially the Mackinac Island variety; and pasties, which originated with Cornish immigrants and were modified by Finnish immigrants.
 * The Stottie cake. Battered Mars Bars if you want to believe (generally Southern) caricatures of the region, as well.
 * In California, many Mexican restaurants serve Carne Asada Fries, which is basically the insides of a steak burrito served over fries.
 * I welcome all out-of-towners with Cincinnati Chili, often making a big deal out of it. Many stories have been born in the taking of friends to try it.
 * Tex-Mex: As the name indicates, this originated among Mexicans and Americans living in Texas. Common dishes include chili-con-carne, fajitas, burritos/chimichangas, tamales, refried beans, "Spanish" rice, and anything made with crispy corn tortillas (including tortilla chips) and shredded cheese—tacos, tostadas, nachos, etc. Although many restaurants outside of Mexico call themselves "Mexican" restaurants, if they offer the above dishes—especially as combo plates—they're probably more accurately described as Tex-Mex.
 * The origins of Tex-Mex cuisine stemmed from the need for ranchers to quickly feed large numbers of employees every day.
 * Because they follow updated versions of the menus and cooking methods of those old ranches, modern Mexican fast food restaurants are actually Tex-Mex restaurants.
 * San Diego, California lays claim to being the home of the fish taco thanks to a Tex-Mex chain called Rubio's.
 * Chop suey (the Chinese term for random leftovers) was actually popularized in Chinese restaurants in San Francisco in the late 19th century. Restaurants in China don't serve chop suey because...well, because it's random leftovers.
 * South America