Decanting aid in the form of a silver-plated alpaca ball. The ball is placed on the opening of the decanter and ensures optimal development of the aromas of a wine when it is poured (picture left). There are also special wine glasses with an integrated decanting ball (centre and right). See also under Decanting and enjoying wine.
Picture left: RL Wine Service
Picture centre and right: Zwiesel Glas
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi