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Synonym for petroleum clay; see there.

Designation (also Juchtenton or Kerosinton) for a characteristic smell and taste in especially white wine. However, this must not be confused with the firn (Altersfirn). Petroleum clay is reminiscent of mineral oil (kerosene), kerosene or petrol or tanned Juchten leather (leather tanned using birch bark tar). Petrolton occurs mainly in Riesling from physiologically ripe grapes with a high carotenoid content. This is promoted by high exposure (solar...

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