That mysterious round metal plate beside your kitchen faucet is called a glass rinser.
Simply press an upside-down glass or bottle onto it, and angled water jets spray away leftover residue in seconds.
Originally popular in bars and restaurants, it’s now a handy kitchen tool for rinsing water bottles, travel mugs, and narrow containers.
Remember, it’s designed for quick rinsing, not deep cleaning—and the rinser itself needs regular cleaning too!