In recent years, ice beverages have won over the palates of lovers of intense and authentic flavours. From German ice wines (Eiswein), made with grapes that naturally freeze on the vine, to ice ciders from Quebec or Sweden, which concentrate the sweetness and essence of apples thanks to the cold, ice has become an unexpected ally of flavour.

These beverages share a common philosophy: using cold as a natural concentration tool to intensify aromas, textures, and complexity.

True ice wine (Eiswein) and authentic ice cider are exceptional products obtained exclusively through a natural freezing process in the vineyard or orchard. The grapes or apples remain on the plant until temperatures naturally drop below –7 °C, at which point the water in the fruit freezes, concentrating sugars, acids, and aromas. Only then are they harvested and pressed while still frozen, producing a dense, complex, naturally sweet must.

By contrast, products known as “vin de glace,” “vin de gel,” or “ice cider” made through controlled freezing are produced using fruit harvested at normal ripeness and then artificially frozen, usually in cold storage facilities. While this process can mimic some sensory characteristics of natural ice wine or cider, it does not reproduce the extreme conditions or the gradual concentration caused by ambient cold.

And now comes the third member of the frozen trio: ice beer, or Eisbock.

Eisbock originated in the Franconia region (Bavaria) as a variation of Bock or Doppelbock beer. According to legend, it was born by accident when a barrel of Bock was left out in the winter cold and partially froze; when the ice was removed, the remaining liquid was darker, denser, and more alcoholic. That “frozen Bock” gave rise to the name Eisbock.

The defining feature of Eisbock is the partial freezing of the already fermented wort—that is, finished beer. This process is based on a physical principle: water freezes before alcohol and dissolved compounds such as sugars, malts, alcohols, and esters. By exposing the beer to temperatures between –7 and –10 °C, pure water ice crystals form and are then removed or separated. The remaining liquid, known as the “heart” of the Eisbock, becomes naturally concentrated, with a higher alcohol content—typically between 9% and 14% ABV—more body, and a much more intense sensory density.

Eisbock presents an intense aroma of caramelized malt, toffee, toasted bread, and ripe or dried fruits, with a warm alcoholic touch. On the palate, it feels sweet and malty, with notes of caramel, honey, light chocolate, and dark fruit, little bitterness, and a smooth, full-bodied finish.

Eisbock is not a beer meant to be drunk in large quantities, but to be savoured slowly, in small sips, with calm and respect. Its intensity and concentration bring it closer to a liqueur than a conventional beer. It is best enjoyed in a small glass, even a grappa glass, to concentrate its aromas and better appreciate its warmth.