Gross cooking practices. Went here one time (will never return) during lunch (wasn't busy, two other patrons besides me) and the same bloke cooked and took money without once washing his hands.
He then took a dirty rag that hasn't seen bleach ever and wiped down the prep counter before grabbing the burger buns, of course without washing his grimey paws. When called out on his unsafe cooking, he became red-faced and quickly rinsed his hands. Too late.