Why Do We Clink Glasses When Toasting?

  • Men toasting with beer, 1899
Men toasting with beer, 1899
Credit: © Bettmann Archive/Getty Images
Author Tony Dunnell

April 9, 2026

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Few social rituals are as widespread or instinctive as clinking glasses after a toast. At weddings, dinners, and bars and pubs around the world, we reach across the table, touch glasses with a satisfying clink and a quick “cheers,” and take a sip. But where does this custom actually come from? Let’s take a look at the origins of this familiar custom, and try to sort the myth from reality.  

Credit: © Heritage Images—Hulton Archive/Getty Images 

The Poison Theory

The most common origin story goes something like this: In medieval times, clinking cups or glasses hard enough would cause liquid to slosh and spill from one vessel into another, so if your drinking companion had poisoned your cup, they’d be consuming poison too. As such, the clinking was a way to show that no drinks had been spiked, whether with belladonna, hemlock, arsenic, mercury, or any other common toxin — poison being a popular way of eliminating one’s rivals in the Middle Ages, especially among the nobility. 

Despite being widely repeated, this theory doesn’t make much sense if you think about it — and, indeed, it’s almost certainly not true. Both Snopes and Ripley’s have debunked the theory, concluding that all versions of this explanation are false. The logistics alone are problematic. Even if a cup or glass were filled to the brim — which in many cases it would not be — most of the clinking spillage would land on the floor, not in your companion’s cup. And if some drops of ale- or wine-diluted poison did enter, would it be enough to cause much harm? Perhaps not. 

What’s more, as Snopes points out, the practice of toasting to someone’s health dates back to the ancient world at least — well before individual glasses were common. In those times, everyone typically drank using shared vessels, rather than carrying around their own glass or cup. Producing your own private drinking vessel at a communal table would likely raise suspicion, rather than guard against it. 

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