Try traditional taco shop fare with a little something different at Taco Viva

Arizonans could be forgiven for thinking they know everything about Mexican food, but a new taco shop puts a traditional twist on some of your favorites .

The big picture: Taco Viva opened in late June on Indian School Road just east of 28th Street.

• Co-owner James Greaves told Axios last year the restaurant would serve "traditional Mexican tacos."
• Greaves lived in Mexico as a teenager, and his partner Rigo Neri is from Sonora.

State of play: Business has been great since Taco Viva opened, Greaves told us last week.

• He said they hope to open additional locations.

Here are a couple more unconventional items on the menu that might catch your eye.

• Vampiros are basically tostadas with melted cheese on them. Greaves said the term is from southern Mexico.
• Mulas are listed on the menu as being quesadillas, but there's so much more to them. Greaves described them as a "taco sandwich" with meat between two tortillas, both with melted cheese.
• "It's very traditional Mexican. I ate that in Mexico City like every other day," he said of the mulas.

1 spicy condiment: They have a house-made hot sauce they call "orange sauce."

• It's made from a combination of chilis, most notably chili de arbol.

Best bites: I got an al pastor vampiro, a chicken mula and carne asada taco. And of course I had to top everything with the orange sauce.

• Is there anything that can't be made better with melted cheese? Anyone who tries the mulas and vampiros will probably agree the answer is usually "no."
• The meat was savory and delicious, and met every expectation I formed when I saw a spit covered in al pastor rotating over a fire.
• The orange sauce looks incredible, and its looks aren't deceiving. It was smoky and spicy, and I'd happily buy a gallon jug of it for my house if one were available.