In a previous article, “Bad Riesling and unleaded petrol’, Dave March posed the idea that the petrol or kerosene smell on aged Rieslings came from poor vineyard practices, specifically over exposure to sunlight.

The article was based on a widely-held belief in Australia that the smell (caused by TDN, or 1,1,6,-trimethyl-1,2-dihydronaphthalene) was a fault. Now, some academic research….. read the full text article at the original source

Source: Wine.co.za