Born in Dubai at the hands of a female Emirati-Saudi partnership, the Salt food truck had people chasing it all over the UAE before permanently landing in the car park at Umm Al Emarat Park (among other locations). The slick Airstream trailer does griddle-seared, grass-fed, hormone-free, halal, Wagyu-style beef sliders (two miniburgers) along with fries, ice cream and milkshakes.
Go for the Hook sliders if you're a jalapeño fan. They've built a small structure next door for folks to dine-in or there's outdoor seating just in front of the truck.