Rotundone: putting the pepper in shiraz

The aromas and flavours associated with particular grape varieties and regional specific wines are more often than not a result of large numbers of compounds, of varying origin, interacting with one another and forming various olfactory and gustatory qualities. There are however a number of compounds (in this case sesquiterpenes) which have an individual aromatic quality associated to them. The distinct aroma of pepper so often associated with cool climate Shiraz/Syrah is the result of one of these sesquiterpenes …

Yeast in winemaking: the unsung heroes of aroma

As a 16 year old I remember working in the cold, damp warehouse of a recycled clothing store. Frequently I would find myself muttering frustratedly under my breath that I was certain the store’s customers would never give me any credit for my work and that the more glamorous store assistants would be the recipients of their gratitude. I think that if our beloved yeast could speak they would vent similar frustrations. So often we wax poetic about the beauty of soil, terroir, vineyard management and climate but less often do we give yeast their fare share of our appreciation. This article will explore in a little more detail the role of yeast in winemaking.

Petrol aroma in riesling: what the TDN …

Exactly what it is which forms the final flavour profile of a wine is complex, multi-faceted and in the most part unknown. Despite this particular dominating aroma or flavour have come to define particular varieties. The petrol aroma in Riesling is one of them. I don’t know why, but I just can’t get enough of it, I’m a petrolhead. But what exactly is it? A fault? A varietal characteristic? Whatever it is, it‘s aroma that divides wine lovers and mystifies the casual wine drinker. This post will explore its origins and discuss in more detail viticultural and climatic factors affecting its presence and concentration.