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The diverse migratory flows that have reached Argentina from the 1880's and until now contributed to the richness and variety of the typical [en] cuisine in the country.
The various ‘ferias de colectividades’ (cultural fairs) that take place throughout Argentina are good illustrations of this. In these fairs we can witness not only a display of each community's traditions, folkloric dances, beauty pageants and souvenirs but also their traditional dishes. For instance, during the Fiesta de Colectividades  in the city of Rosario that takes place every year, a varied menu  is offered representing the multiple communities (Latin, European and Asian) that compose the Argentinian society. In this video, we can see how typical Paraguayan food is prepared and sold during that same fair in Rosario.
On Facebook, the page Encuentro Anual de Colectividades  (Annual Gathering of Communities) shows some dishes that will be sold during the 2014 program in the city of Alta Gracia  [es]. The city, located in the Córdoba province, is quite famous because it is where the revolutionary Che Guevara [en] lived for 12 years.
Every September, the Misiones  province [en] also celebrates its traditional Fiesta Nacional del Inmigrante  (National Feast of the Immigrant). For the occasion, the Polish community, among other migrant groups, cooks Kursak Polski na Royezaj,  better known as Polish chicken.
1 cebolla grande
2 ajo puerro
1 morrón rojo mediano
1 morrón verde mediano
200 gramos crema de leche
200 gramos champiñones
sal y pimienta
Preparación de la salsa
Picar la cebolla bien fina, rehogar con una cucharada de aceite, agregar los morrones cortados en daditos, agregar el ajo puerro picado muy fino. Revolver muy bien, agregar crema de leche y los champignones.
Cocinar durante cinco minutos, agregar sal y pimienta a gusto.
Optativo nuez moscada.
Si queda muy espesa la salsa agregar leche para suavizar. Servir acompañado con pollo a la parrilla o al horno
1 Large Onion
1 Medium Red Pepper
1 Medium Green Pepper
200 g. Cream
200 g. Mushrooms
Salt and Pepper
Preparation of the sauce
Chop the onions very finely. Fry lightly with one tbsp of oil. Add the peppers after they've been diced followed by the leeks finely cut. Stir well. Add the cream and mushrooms.
Cook for 5 minutes. Add salt and pepper to taste. You can also add some nutmeg if you wish. If sauce gets too thick, add some milk. Serve with grilled or roast chicken.
In addition there are community-specific celebrations, such as the one by the Volga Germans [en], who settled mostly in the province of Entre Ríos. The Volga Germans lived in the region of southeastern European Russia, close to the Volga river  [en]. They came to Argentina in 1878 and preserved their traditions as well as their language. Cuisine is naturally at the heart of these traditions. This video produced by the Asociación Argentina de Descendientes de Alemanes del Volga  (Argentinian Association of the Volga Germans Descendants) demonstrates how to prepare a Kreppel:
There also many restaurants serving foreign food. The Croatian community in Argentina, for instance, keeps its culinary traditions with restaurants like Dobar Tek,  offering a rich Croatian menu . This video shows the “art” of preparing an apple strudel.
The Armenian community is also quite influential in Argentina. Romina Boyadjian  suggests the 5 best dishes in Armenian cuisine while pointing out that the Community in the diaspora has reinvented the typical dishes:
Algo curioso es que la comida armenia que se come en Argentina es muy distinta a la que se consume en Armenia. Esto tiene que ver con las reinvenciones que hacen los diferentes pueblos al partir de su tierra natal, las costumbres que traen consigo y lo que termina siendo valorado en la nueva comunidad. Hay comidas que acá se consideran típicas y que allá apenas se conocen.
It's quite intriguing that the Armenian cuisine we eat in Argentina is quite different from the one actually consumed in Armenia. This has to do with the reinventions done by the different populations based on their homeland, the traditions that they bring and what ends up being valued in the new community. Some dishes are considered traditional yet they are barely known there (in Armenia).
One of the cities symbolizing the Jewish immigration to Argentina is Moisés Ville [en], established by the first immigrants who reached the country. On the YouTube account of the initiative Señal Santa Fe  we can see the city and get to know how traditions are preserved through well-known dishes such as the strudel or the Knish  [en] among others:
But which dish was quickly adopted by immigrants upon their arrival to the country? The asado  [en] without any doubt, especially because the majority of the newcomers were peasants and meat was quite cheap. The Club Argentino de Asadores a la Estaca  (Argetinian Club of Rotisseurs) has some photos for you to enjoy.