Fans of Doritos “Flamin’ Hot” line are in for some good news. The brand is adding a new flavor– but there’s a twist: We don’t know what it is.

That’s because Doritos is launching its first-ever Flamin’ Hot Mystery Flavor.

Here’s what we do know– the chip will be coated in the iconic Flamin’ Hot dusting—made famous by Flamin’ Hot Cheetos, reports All Recipes.

The chips hit Walmart shelves today. The Walmart-exclusive chips are launching as part of its April Early Access event, which gives Walmart+ members a full 24 hours to peruse new, limited-time, and exclusive Walmart products before the rest of its customers. After the online-only access event, the chips will continue to roll out nationwide.

Doritos teams up with Taco Bell

Doritos and Taco Bell have also teamed up for Doritos Baja Fiery Mango– a flavor inspired by Baja Blast, the tropical lime-flavored soft drink created by Mountain Dew specifically for Taco Bell. The chips, which are now available in grocery stores, have a spice-packed, fruity, tangy, flavor.