What is flavor saver?

Flavor saver is a slang term for a mustache that is grown specifically to trap and retain food and drink flavors. These mustaches are often shaped in a way that allows them to collect and hold onto small particles of food or drink, enhancing the wearer's sense of taste. While flavor savers are typically associated with a retro or hipster style, they can be found on a variety of people and have been popular at various times throughout history. Some people believe that flavor savers can actually enhance the taste of food and drink by holding onto the flavors longer and allowing them to be savored. However, others may find them unhygienic or unattractive.