Mostaza, SA is an Argentine fast food chain that was established in 1998. Its specialities are hamburgers, sandwiches, desserts and café. It is the second largest fast food chain in its country, after the multinational McDonald's.
Mostaza had 50 restaurants around the country, being present in hypermarkets, malls and on the street.Mostaza avanza en el Mercado Gastrofranchising - 2011/06/27 (in Spanish) As of 2016, it doubled that amount to close to 110 stores. It currently has more than 180 locations, present in supercenters, shopping malls, and storefronts
Other than Argentina, Mostaza also has operations in Paraguay, Uruguay, and Bolivia, with multiple locations in both Paraguay and Uruguay, and only one in Bolivia.
See also List of hamburger restaurants
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