THIS ARTICLE IS ADAPTED FROM THE SEPTEMBER 4, 2021, EDITION OF GASTRO OBSCURA’S FAVORITE THINGS NEWSLETTER. YOU CAN SIGN UP HERE. In the winters of 2012 and 2013, Denny’s offered, of all things, themed menus based on the first two Hobbit movies. The sheer hilarity of this partnership means I can still rattle off menu items from memory: Radagast’s Red Velvet Pancake Puppies. The Hobbit Hole Breakfast. Gandalf’s Gobble Melt. Sadly, I never made it to Denny’s to try any of these. (And the restaurant chain has not offered me,…