Walter König, managing director of the Society of Hop Research north of Munich, said researchers have had to breed special hop varieties for alcohol-free beer. If brewers use the typical hops for alcohol-free beer, the distinct aroma gets lost when the alcohol is reduced during the brewing process.

But customers don’t care about that, König said Friday as he prepared for Oktoberfest.

“They only want to know that what they are tasting is as good as traditional beers with alcohol,” he said.]