Local fast-food rival to McDonald’s, same terminal concourse
Mostaza at Aeroparque Jorge Newbery sits in the main terminal concourse and basically fills the same role as the McDonald’s here, just with local twists on burgers. It runs as a standard counter-service spot with menu boards over the counter and plastic trays, very much classic fast-food format.
Pricing sits in the $ tier, so a basic burger combo comes in cheaper than many table-service cafés at AEP. One Google reviewer called out that their meal here cost less than nearby sit-down spots before a domestic flight, so this is one of the better bets if you’re watching pesos and just need something quick off the grill.
The menu leans on burgers, fries, and soft drinks, with chicken sandwiches and combo “menu” deals shown in Google photos from 2024. Expect the usual Argentine fast-food toppings: more mayo, melted cheese, and a slightly different seasoning profile than US chains, but still familiar enough that you can order in 30 seconds at the counter.
Service often moves slowly when multiple departures hit at the same time, and the small seating area around the shop gets packed. Reviews from 2023 mention waiting through a long queue while several Aerolíneas Argentinas domestic flights boarded within 45 minutes, so build a 20–25 minute buffer if your gate is far from the central concourse.
The rating averages around 3 out of 5, which tracks with the food: burgers are fine, fries are hit-or-miss on crispness, and everything comes in standard paper wrap or cardboard boxes. Skip it if you want a proper sit-down meal and table service; use it when you just want something predictable between security and boarding.
Practical tip: check your gate on the departures board first, then order to-go at Mostaza and carry your bag and tray toward your gate before the seating fills up.