Winemaking with an open-top fermenter is not for an inexperienced winemaker. As there are a few more risks involved, and if you don’t have a good feel or confidence, you will not know how to best respond to your parcel of wine at the right times during the process for the best results.Fermenting in an open-top container can be beneficial during the early stages of fermentation - as you get oxygen exposure which helps the yeast build up a strong population. Also there is nothing keeping the heat generated during fermentation from escaping. As lids can help trap heat resulting in a fermentation temperature far too hot, making for a tired wine.As I mentioned this is not for an inexperienced winemaker - as you are also at risk of picking up too much oxygen or micro-organisms that could spoil your wine, when not protected by a lid and airlock. Open fermentations work because of the carbon dioxide produced by the yeast during alcoholic fermentation acts as a blanket over the wine. As long as the air around the fermenter is still and there is enough CO2 being produced you can ferment without a lid. Experienced winemaker will be able to identify when the production of CO2 is diminishing and to cover, seal the wine up before it is susceptible to spoiling.You can use a sterile fabric-cloth, which gives a soft barrier that can help prevent moving air from blowing all the carbon dioxide away. A fermenter should only be open during the ‘primary’ fermentation stage - which is when approximately 70% of the grape sugars are fermented.Also by using open-top fermenters you can have better control of the temperature and speed of fermentation. During fermentation of red grapes, parcels at lower-temperature can add aromatics and freshness, higher-temperature can add depth to the wine. Also by fermenting in different size tanks, different volumes with varied thickness of the cap and different temperatures, you have different flavours profiles and wine textures. The result is a broader range of blending options at the end for the winemaker.S
Winemaking with an open-top fermenter is not for an inexperienced winemaker. As there are a few more risks involved, and if you don’t have a good feel or confidence, you will not know how to best respond to your parcel of wine at the right times during the process for the best results.<br>Fermenting in an open-top container can be beneficial during the early stages of fermentation - as you get oxygen exposure which helps the yeast build up a strong population. Also there is nothing keeping the heat generated during fermentation from escaping. As lids can help trap heat resulting in a fermentation temperature far too hot, making for a tired wine.<br>As I mentioned this is not for an inexperienced winemaker - as you are also at risk of picking up too much oxygen or micro-organisms that could spoil your wine, when not protected by a lid and airlock. Open fermentations work because of the carbon dioxide produced by the yeast during alcoholic fermentation acts as a blanket over the wine. As long as the air around the fermenter is still and there is enough CO2 being produced you can ferment without a lid. Experienced winemaker will be able to identify when the production of CO2 is diminishing and to cover, seal the wine up before it is susceptible to spoiling.<br>You can use a sterile fabric-cloth, which gives a soft barrier that can help prevent moving air from blowing all the carbon dioxide away. A fermenter should only be open during the ‘primary’ fermentation stage - which is when approximately 70% of the grape sugars are fermented.<br>Also by using open-top fermenters you can have better control of the temperature and speed of fermentation. During fermentation of red grapes, parcels at lower-temperature can add aromatics and freshness, higher-temperature can add depth to the wine. Also by fermenting in different size tanks, different volumes with varied thickness of the cap and different temperatures, you have different flavours profiles and wine textures. The result is a broader range of blending options at the end for the winemaker.<br>S
正在翻译中..