Key points
- Stones chill a drink a little. Ice chills it a lot. Three soapstone cubes drop a 2 ounce pour by a few degrees; one large ice cube drops it by far more and keeps it there.
- The reason is physics: ice absorbs heat as it melts, stones only as they warm. Stones have nothing like the cooling capacity of the same volume of ice.
- Stones never dilute, which is their whole case. If you want a pour that is slightly cooler than room temperature and untouched, they do that.
- Steel cubes outperform soapstone and can scratch glass. Soapstone is gentler and weaker. Both need to live in the freezer.
Whiskey stones promise a chilled pour with no dilution, and they are in half the gift guides every December. The promise is honest in the narrowest sense. They do chill, slightly, and they do not dilute. Whether that is what you want is the real question, and it is worth answering before buying a set or receiving a third one.
If you want the short answer: a large ice cube does the job stones are sold for, and does it much better, at the cost of a little water. Stones suit the person who wants a pour a few degrees below room temperature and otherwise unchanged. That is a real preference and a narrow one.
Why ice wins on cooling
Ice cools a drink in two ways. It warms from freezer temperature to zero, which takes a little heat out of the drink, and then it melts, which takes a great deal more. Melting is where almost all the cooling happens. A single 2 inch cube can absorb enough heat to drop a 2 ounce pour by 20 degrees Fahrenheit or more and keep it there while it slowly melts.
A stone only has the first mechanism. It warms up from freezer temperature to the drink’s temperature and then stops doing anything. Soapstone holds very little heat for its size, so three cubes manage a drop of perhaps 5 to 10 degrees, and the drink warms back toward room temperature within ten or fifteen minutes.
This is not a flaw in any particular brand. It is what stone is.
Soapstone against steel
Soapstone cubes are the original. They are soft, so they do not scratch glass, they are inert, and they are the weakest coolers of the lot. They also absorb smells from the freezer over time.
Stainless steel cubes hold more cold for their size and chill noticeably better, though still nowhere near ice. They are heavy, they clink, and they can mark the inside of a thin glass if dropped in. Some have a liquid gel core sealed inside to hold more cold; if the shell cracks the gel leaks.
Steel spheres and cylinders are the same thing in a different shape. Larger pieces hold more cold and displace more of the drink.
What stones are actually for
A pour that is slightly cooler than the room and completely undiluted. Some people prefer their spirit exactly as bottled and find even a little melt changes it, and for them a stone takes the edge off a warm room without touching the drink. That is the honest use case. It is a small one.
A second use: cooling a drink that is already cold, such as one from a bottle kept in a cool cellar, without diluting it further. A third: a chilled steel cube in a drink that has already had its dilution from stirring, to keep it cold without adding more water.
What ice is for
Everything else. Chilling a drink properly, holding it cold for an hour, and adding the small amount of water that opens up most spirits. Dilution is a feature. A large, slow-melting cube limits it to a sensible amount, which is the whole argument of our guide to large ice moulds.
Practicalities
Stones live in the freezer, in a bag or a tray, for at least four hours before use. They go in the glass first, then the pour, lowered rather than dropped. They are rinsed and dried after use and go back in the freezer. Three to a 2 ounce pour is the usual number; more displaces too much of the drink.
Many sets come with a tray, a bag and tongs. The tongs are useful. The bag keeps freezer smells off soapstone.
Who should buy stones
Someone who has said, in those words, that they want a pour slightly cooler and not diluted at all. Someone who already owns good glasses and a large ice mould and wants the third option. Nobody else, really.
Who should not
Anyone who wants a cold drink. Anyone buying a gift for a person who has not asked. Anyone with thin, expensive glasses, if the stones are steel. And anyone who finds a large ice cube does everything they want, which is most people once they have tried one.
How we choose chilling tools
When we recommend ice moulds, stones or chilling tools in our decanters and tools section, each pick states the material, the size and count, whether it can scratch glass, and what owners report about actual chilling and about smells and leaks after a few months. We make no claims about the spirits themselves. Our full process is on the how we choose page.
Final verdict
Ice, in one large cube, for a cold drink. Stones, steel rather than soapstone, only for a pour you want untouched and barely cooled. If you are buying a gift and are not sure, buy the ice mould.
Questions people ask
How cold do whiskey stones get a drink?
Three frozen soapstone cubes in a 2 ounce pour typically take the temperature down by about 5 to 10 degrees Fahrenheit and the effect fades within ten minutes as the stones warm. A single large ice cube takes the same pour down by 20 degrees or more and holds it for the length of the drink.
Do whiskey stones scratch glasses?
Steel cubes can mark the inside of a thin glass when dropped in. Soapstone is softer than glass and does not. Lower either into the glass rather than dropping them.
Are whiskey stones a good gift?
They are the most-gifted and least-used piece of barware. Give them to someone who has said they want a chilled pour with no dilution. For anyone else, a large ice mould or a good pair of glasses is the gift that gets used.
