Home Winemaking Yeast Selection

If you're making wine from commercially availablea wide range of temperature (45° to
wine kits, you'll have everything you need to95°F) in which it can live, grow and reproduce
make very good wine. Even the yeast is providedwhile other strains such as Scott Lab's ST strain
for you in the kit. I've found that Lalvin EC-1118can only tolerate a temperature between 60 and
strain of yeast is the one that is most often68°F. But there are other advantages of the
included in both premium and lower quality kits.ST strain, as long as you can keep your
EC-1118 yeast is a very good all purpose winefermenting wine in that temperature range.
yeast. Originating in the Champagne area ofIn a recent study by the Australian Wine
France, it is used to make a wide variety ofResearch Institute, it was shown that even using
juices because of it's high alcohol tolerance, abilitytwo different strains of yeast (which is called
to withstand a wide range of temperatures, and"co-inoculation") may also be beneficial to
it's neutrality to flavor and aromas.increasing the flavors and aromas in a wine. At
Perhaps though you are considering experimentingthe same time, the winemaker has to be careful
with other types of wines like making your ownthat the two strains will not compete against each
from fruit in your garden, or even frozen fruitother, resulting in a "stuck fermentation" - where
from the grocery store, you might want to learnthe yeast seem to become inactive. In that case,
more about the types of yeast strains availableit's good to have a packet of EC-1118 on hand as
to you. It has been shown in several studies thatit is often used in such cases.
the strain of yeast used to make a wine canYeast generally is available in the retail market in 5
have positive affects on the flavors and aromasgram packages. This is enough to innoculate 5
in the resulting wine.gallons of juice. Larger packages are available but
There are many different characteristics in a wineare usually only used by professional winemakers.
yeast that you might want to know about whenSometimes though, you might be able to work
selecting your yeast for your next wine. Forsomething out with a local winery if they are using
example, you might want a wine that doesn't fullya yeast that you are finding difficult to obtain
ferment to "dry" (zero or almost zero residualthrough a retail store.
sugar), but instead want a wine that has a hint ofDon't be afraid to experiment with yeast! You
sweetness to it. In that case, you'll want a yeastmight want to consider smaller batches of wine,
with a lower alcohol tolerance. It is the yeast thatie. 1 gallon as opposed to 5 gallons when you are
turn the sugar in a juice into alcohol, and theexperimenting. If it doesn't turn out the way you
higher a strain of yeast can tolerate alcohol, thewant, it's a smaller amount you have to deal with.
more sugar it will consume.More information and resources about yeast may
Another factor is the yeast's temperature range.be found here.
Some like the aforementioned EC-1118 strain have