More often than not, tipsters, readers, friends and family of Eater have one question: Where should I eat right now? What are the newest and hottest restaurants? For that very reason, we offer the Eater Heatmap, which will change periodically to highlight where the food-crazed masses are flocking to at the moment. For this edition, we welcome Riffs Cafe at Highland Ridge. Yes, it opened back at the beginning of October, but with a glowing review this past weekend in The Tennessean and a kitchen crew that's hitting its stride, it was time.