Schlotzsky’s calls on fans to “like” its Facebook Hot Sauce thermometer to activate the saucy giveaway on Valentine’s Day   ATLANTA, 2017-Jan-22 — /EPR Retail News/ — Schlotzsky’s® is kicking up the heat this winter by giving away 100,000 special 3oz. bottles of its signature hot sauce at restaurants nationwide on Valentine’s Day… but participation of Schlotzsky’s fans…