Ordering at this food truck should be easy. There are only six choices: three sandwiches, three bagels. But faced with the options, you might have to sit down on one of the cushion-topped milk crates to ponder them.

Will it be the sell-out Reuben made with Wagyu pastrami, caramelised onion, sauerkraut and chipotle mayonnaise? The Japanese-leaning fried chicken bagel with Kewpie and tonkatsu sauce? Or maybe the portobello mushroom melt?

It’s easy to forget you’re in a petrol station carpark - owners Serwan Roman and Andrew Vu fit the outdoor space with plenty of greenery, the British racing green of Roman’s Deli branding is everywhere, and music pumps from speakers as staff serve sandwiches, coffees and house-made lemonades.