There are a number of similarities between Shake Shack and BurgerFi. Both use all natural ingredients.
Both serve good burgers in a wax paper holder. Behold clockwise from left, the BurgerFi cheeseburger, VegeFi burger served on lettuce bun, the Breakfast All Day burger, and the Chicago Style dog.
Check out this table - these folks are having an awesome time inhaling their pile of burgers.
Note, the red velvet concrete at BurgerFi is smushed and packed together, not blended. Both were smooth, creamy, and delicious. The staff were very friendly and helpful, and if you see manager Nick ask him to prove how thick the red velvet concrete is.