Austria, Vienna, The Naschmarkt, Display of Federweisser, wine in the fermentation stage, known as Sturm in Austria.

Austria, Vienna, The Naschmarkt, Display of Federweisser, wine in the fermentation stage, known as Sturm in Austria, line of bottles with tasting glasses. Due to the carbonic acid, Federweißer tas...

Austria, Vienna, Young couple having glass of Federweisser, wine in the fermentation stage known as Sturm in Austria seated at outside table made from a barrel. Due to the carbonic acid, Federweisser...

India, Biogas Digester producing methane gas from cattle manure.

Botswana, Kanya, Biogas Digester.

Concha y Toro winery. Wooden fermentation and maturation barrels.

Young Embera daughter painted with black dye extracted from Jagua fruit wearing multiple bead necklaces and head-dress of wild hybiscus and lilies masticates maize the saliva sets off fermentation...

Cacao beans being rinsed after fermentation Rio Caribe.