From TNG
The Most Iconic Bavarian Snack A Laugenbrezel is a traditional German dough specialty which is baked in the form of a pretzel loop. The particularity about this type of pretzel is that it is dipped in a lye solution before it is put into the oven. This creates a chemical reaction that gives the pretzel its typical appearance and taste. Reheat Instructions: Baked at 160'C for 5 mins