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Diacetyl has long been seen as a fault in beers and is still considered as such for Lager type beers.  On the other hand, in certain grape varieties such as Chardonnay, diacetyl is an intrinsic characteristic of this type of wine.  What is diacetyl really? Where does it come from?  We will answer theses questions in this short article and give you a little bit of insight on its metabolism. Diacetyl is a by-product of […]