This typical flavour and aroma, which is also commonly referred to as "Alterston" or "Altl" in dialect (with a positive connotation), is mainly found in older white wines. The term is derived from the Old High German "firni", which means "previous year" or "old". This most common form of age tone should not be confused with UTA (atypical age tone), Böckser (Lagerböckser) or the related petrol tone (mainly used in Riesling...
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