They don't have tacos in Peru. But if they did, I could imagine they'd be something like this: juicy chunks of charred steak smothered in a garlicky green spread of parsley and aji pepper. The South American version of pesto, this chimichurri sauce is so biting and herbal it belongs in a garden. But there we were, standing in an empty parking lot eating while standing up. 

We had traveled half an hour to get these hybrid tacos at Gigi's Mexican Peruvian Fusion food truck. Which, honestly wasn't the wisest decision, as the truck goes all over town. I was so hungry when we got there I ditched my "one taco" rule and ordered the $8 taco plate, which also came with a mango chipotle chicken taco and a creamy cilantro lime fish. But the chimichurri carne asada was my favorite, mostly because of that euphoric sauce, so good I lost control and let out a deep "mmmmm" for the surrounding landscaping. 

Weird fact: The office building next door looked like something out of the Jetsons, with this wavy red water slide motif and a fountain shaped like a Mayan water temple. This should be a landmark ...

Location: We caught them at the LivingSocial building on 250 S. Williams Blvd. But the truck goes all over. Check its Twitter page for updates: twitter.com/gigismexican

Phone: (520) 222-9108

Payment: Accepts debit and credit

Contact Andi Berlin at aberlin@tucson.com. On Twitter: @AndiBerlin

You can find the Star's digital food writer Andi Berlin at a taqueria near you, taking tiny bites and furiously scribbling into an old notepad.