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Tag Archives | yeast

Yeast fermenting the must

Wine without sulphites if you choose the right yeast

Some people see red when they hear someone say “added yeast”. But that does not prevent most wine producers from choosing cultivated (selected) yeast over wild yeast. There are over 200 varieties of Saccharomyces cerevisiae on the French market. Every year, new yeast strains are launched. And every year the Institut Français de la Vigne […]

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Yeast fermenting the must

The right kind of yeast helps to reduce sulphur in wine

A wine’s sulphur content is increasingly scrutinized. Sulphur dioxide is added to the wine as an antioxidant and stabiliser. But its use has diminished, rather drastically I think, in recent decades, in part thanks to better winemaking technology and knowledge. Sometimes you see “no added sulphur” on a label. But you rarely see a wine […]

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Selected yeasts "XR grand rouge"

Protect the must with yeast instead of sulphur

Natural wines are fashionable at the moment and there is a lot of talk about the difficulty of making wine without adding sulphur. But what if it’s not that hard? Since a few years’ back there is something called bio protection. It means that by adding special yeasts for the fermentation the wine makers can […]

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Selected yeasts "XR grand rouge"

Cultivated natural yeast?

Yeast, cultivated or natural, is something that a lot of people feel strongly about. Both consumers and producers. Although the vast majority of producers use cultivated yeast, the “natural” yeast enthusiasts have been so convincing, or overwhelming, that some wine consumers today mistakenly believe that natural yeast is the only true path to quality. “Natural” […]

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Smoke gets in your wine?

Fires break out now and then in the immediate vicinity of vineyards. It can be violent fires that go on for days, or even weeks. Although the vines may not be affected directly by the fire, will the smoke have an impact on the finished wine? Yes, it is very likely, according to an article […]

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Cultured yeast from Danish Chr. Hansen

Danish company Chr. Hansen, with headquarters on the outskirts of Copenhagen, is one of the major suppliers to the wine industry. The vast majority of wines ferment with cultured yeast (or “selected”) and often this yeast comes from Chr. Hansen. The company continually experiments to offer different types of yeast to wine producers. 2009 it […]

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Too much alcohol in the wine? Change the yeast!

People sometimes complain that there is too much alcohol in wine. In a warm climate, however, it is not always easy to produce wines with lower alcohol content. When ripe grapes, rich in sugar, ferment to a totally dry wine, the alcohol level often reaches 14 or 14.5%. But now research has come one step […]

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Fermentation in reverse order

Danish chemical company Chr. Hansen launches something very new just in time for the harvest 2014. This brand new something is called Viniflora NoVA and is a new generation of lactic bacteria isolated from fermenting must. The research has been done in collaboration with Professor Maret du Toit at the University of Stellenbosch in South […]

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New yeast gives lower alcohol content

The chemical company Lallemand Oenologie, in collaboration with the French Institute for Agricultural Research INRA, has through research obtained a Saccharomyces cerevisiae yeast that enables you to produce a wine with lower alcohol than normal without affecting wine quality. It should be noted that the yeast is not genetically modified. Research on yeast that produces […]

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Choosing the right kind of yeast

An important decision for the winemaker is what kind of yeast he is going to use. First, should it be the “naturally” occurring yeast, or should he use cultured yeast? If he chooses the latter, there are many different varieties to choose from. Purists believe that the cultured yeast, adding yeast, is wrong, that it […]

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Wine barrels and sulphuring device

Sulphur in the wine – more or less

How much sulphur to put in the wine is much discussed today. You can do without it, say some natural wine enthusiasts. Absolutely impossible to do without, say others. Most people use sulphur to some extent, to protect the wine from oxidation and against impure flavours. But sulphur is also found in wine naturally. It […]

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Fermenting grapes

New yeast strain gives wines with less sulphur

All wines contain sulphur, but some less than others, help is on the way Almost all wines contain sulphur. This is not only because most winemakers add sulphur to stabilise the wine and make it more long-lived. It is also because during fermentation sulphur is produced. The yeast that converts sugar to alcohol, carbon dioxide […]

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Must fermenting in a tank

Not all yeasts are created equal

It is common practice to add cultured (sometimes called artificial) yeast to the must to control the fermentation of wine. Just like for “natural” fermentation it is Saccharomyses Cerevisiae that converts the sugar to alcohol and carbon dioxide (for beer it can be Saccharomyses Carlsbergensis). A new type of has now been launched that is […]

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