“Nonalcoholic beers” can be made by modifying the fermentation so that the yeasts produce little alcohol (very low temperatures, abundant oxygen), or by remov-ing the alcohol from normally fermented beer using a molecular version of sieving called “reverse osmosis.” The lowest-alcohol malt product is “malta,” a popular drink in the Caribbean made by bottling a full-fledged wort without any fermentation at all. It is dense and sweet.