WHAT YOU'RE EATING: Burgers. Like, legit burgers.
WHO'S MAKING YOUR FOOD: Husband-and-wife team Travis and Kelsey Walnum. They started slinging patties out of their trailer about two years ago, and they get all their beef from the Missoula-based Oxbow Cattle Company.
BESTSELLER: Depends on what the weekly rotator is, but the "O.G." is a mainstay, with lettuce, tomato, onion, pickle, American cheese and Wally Sauce.
PRO TIP: Show up early. When we arrived on a recent weeknight a little before 8, Travis and Kelsey had already been cleaned out of burgers and buns. And keep your burger in the wrapper while you're eating it. You won't want to waste a drop of that Wally Sauce.
PRICE RANGE: $5.50–$8
WHERE TO FIND IT: Wally & Buck parks outside the Southside KettleHouse Tuesday, Thursday and Friday from 5:30 to 8:30 p.m. They're also at Out to Lunch in Caras Park Wednesdays from 11 a.m. to 2 p.m.
WORD ON THE STREET: If meat isn't your thing, fear not. Wally & Buck has you covered with a delicious organic bean patty option. Otherwise, Travis and Kelsey recommend keeping an eye on the rotator. A few weeks ago it was the "Lil Kimchi," with kimchi, Korean BBQ and scallions. They also crowdsource rotator ideas, so hit up @wallyandbuck on Facebook.