Big Daddy Burger Bár
For a deeply local experience, trek out to Big Daddy Burger in the south of Budapest, a half-hour bus ride away from downtown. Flanked by grey, communist-era high-rises lies this not particularly inviting, flimsy wooden shack, painted in red, white and blue. The cheap, kitschy 'Merican decor (I couldn't be sure that they're being ironic) features decorative license plates from Texas, Florida, and Missouri and plenty of other tchotchkes.
Big Daddy's burgers come in smaller and squishier buns than elsewhere in Budapest, making for an ideal patty-to-bun ratio. The 110 gram / 3.9 oz. meat is made from a local cattle breed. The default doneness level is just over medium, but you can specify how you want yours cooked. Of the 28 available burgers options, I usually go for the “Még egy kis hús - bacon burger” with cheddar and strips of crispy bacon (€4).
Another reason to journey out to Big Daddy is the prices, which are about half of what you will find in downtown (the classic cheeseburger runs €3).