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New World Wine Maker

Fermenting Sauvignon blanc on full lees…

There is always a major lesson (or many) to be learnt in each harvest. A few years ago after planning space, bottling etc., I was convinced we had enough space at a cellar where I consult to take in t…

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Wine yeast nutrients 101

Various parts of dead yeasts can be used as a source of nutrition / alcohol tolerance for live yeast cells during fermentation. Sometimes they are used in combination with inorganic nitrogen such as D…

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Stinkpots

Now you probably wonder what old Jack Sparrow had to do with this…Interestingly enough, Stinkpots, favorite weapons of pirates, were malodorous concoctions made from saltpeter, limestone, asafetida…

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Are your yeasts on sterols?

Recent crackdowns on doping in sport have made all of us more aware of the effects of performance enhancing supplements. This got me thinking. What if winemakers could come up with a legal magic potio…

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A new record for wine yeasts!

I have been involved in “the world of wine yeast” since 1991 and the highest alcohol produced by a yeast during fermentation that I have ever encountered during all these years is 18.2%. I…

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Yeast cell walls versus inactivated yeasts…

Yeast cell walls are also known as yeast hulls or yeast ghosts. Many sales reps sell yeast nutrients that they claim contain yeast cell walls when in fact they contain the whole yeast that has been in…

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