For the garlic mayo
01 -
1/2 cup (120 g) mayonnaise
02 -
2 garlic cloves, finely grated
03 -
1 tablespoon fresh lime juice
04 -
1/4 teaspoon kosher salt
For the plantain buns
05 -
4 large green plantains
06 -
3 cups neutral oil, for shallow frying
07 -
1 teaspoon kosher salt, plus more to finish
For the smashed beef
08 -
1 lb (450 g) 80/20 ground beef, divided into 4 balls
09 -
1 teaspoon kosher salt
10 -
1/2 teaspoon black pepper
11 -
4 slices American cheese or white cheddar
For assembly
12 -
4 crisp lettuce leaves, dried well
13 -
1 large tomato, thinly sliced and blotted dry
14 -
1/2 small white onion, thinly sliced
15 -
Lime wedges, for serving