What is the origin of the idiom "here's to someone or something" and when to use it?

The idiom "here's to someone or something" is a traditional toast used to raise a drink in honor or tribute. The origin of this expression is rooted in the longstanding custom of raising a glass to offer a toast, typically during celebratory moments or gatherings. It is a way to express well wishes, goodwill, or to celebrate someone or something in a festive and positive manner.