The host of has focused on opening Fronteras Frescos and Tortas Fronteras in airports, Macy's, and Northwestern, as well as Red O in California.
Bayless reps say they'll reveal clues via social media.
$1.75 AGUA FRESCA Typically, agua fresca, a mix of water and fruit available at almost every taquería, tastes like diluted Kool-Aid.
The one at La Lagartija Taquería is a juicy elixir rife with sweet watermelon cubes and plump strawberry hunks.
$2.25 MARGARITA A good margarita starts with 100 percent blue agave tequila and real lime juice.