(TrendHunter.com) It seems that things are heating up over at Flat Top Grill because the brand just launched four new limited-time offerings, including a Five Spiced Old Fashioned. Flat Top Grill is a Chicago-born... (TrendHunter.com) It seems that things are heating up over at Flat Top Grill because the brand just launched four new limited-time offerings, including a Five Spiced Old Fashioned. Flat Top Grill is a Chicago-born...