Cold stabilization is a method of reducing the likelihood of bitartrate crystals (“wine diamonds”) forming in wine as it ages. This is particularly important for white wines.
If you are starting your white wine from fresh grapes (our Summerland Gewürztraminer, for example) rather than from a pail of juice from a winery, you need to know how to get “settled juice” and to time your “skin contact.”
Sometimes a new wine will have several defects, and it will be obvious to the winemaker that multiple fining treatments will be needed. In general, fining operations are done in the following sequence.
Some wine experts claim that the accurate monitoring of Malo-Lactic Fermentation (MLF) is one of the most critical parameters in red wine making but one that is most commonly overlooked. Paper Chromatography is a simple qualitative analytical procedure that has been used for many years in the wine industry to assess progress in MLF.
COMING SOON. In the meantime, see notes on Go-Ferm and Fermaid K by the manufacturer, Lallemand.
Yeasts commonly used by Nanaimo Winemakers These notes come (often directly) from the various manufacturer’s websites. All yeasts are from Lallemand except Vin 13 (Anchor) and VL1 and VL3 (Laffort). Compiled September 2005. Index of yeasts 71B BM45 CY3079 D47 …
Potassium sorbate, a widely used food preservative, is added in small quantities to sweet or semi-sweet wines to prevent further sugar fermentation. It is the only practical way for the home winemaker to guarantee that fermentation will not restart in the bottle.
A white wine that was clear once but now is hazy or is hazier when it cold than when it is warm is suffering from protein haze. This is largely an aesthetic problem but one which winemakers try to eliminate. This article explains what home winemakers can do.
Reduced sulfur compounds (those formed in the absence of oxygen) are a perennial problem in winemaking because they usually smell very foul (rubber, swamp, cabbage, garlic). They also reduce a wines mouth feel and enhance bitterness.
This is the latest version (Oct 2014) of the Excel tool the Willem Wyngaards developed on the basis of the previous article. We call it a YAN calculator, but it is really a nitrogen addition calculator (and it also calculates yeast additions).