That’s $10! Real juicy patty with caramelised onions. From this cross-section, you can tell it’s not an overly processed frozen patty that’s mass-produced.

The buns - seeded and fluffy, it’s brioche!
The onions - caramelised, not raw and ‘thrown in’ for the aesthetics
The cheese - American cheddar! Just like McDonald’s!
The pickles - added that tangy crunch!

It’s definitely a place I’d revisit even without Burpple beyond (oh yes, this is totally a steal with Burpple 1-1)
Can’t wait to try their rice bowls some day!