Katz's Deli & Bar
618 W 6th St
Austin, TX
all damned night!
Don't let the name "deli" fool you, this a full-fledged restaurant.
Most of Austin's other late night choices tend toward veggie options, so if that's not your syle, go to Katz's.
They serve bigger-than-your-head New York deli-style sandwiches, as well as breakfast, a few southern specialties, and are most famous for their desserts. Try the fried pickles.