Originally posted by MrsCordial
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If you add a campden tablet what you are doing is stunning the yeast which will drop to the bottom to form a sediment. When you then rack this off and leave the sediment you will have very little active yeast remaining and no sugar left to feed it anyway so when you bottle it your wine will be still.
If you want to have a sparking wine you dont use the campden tablet and just wait until the wine has cleared and then rack to a new vessel, add 1tsp sugar per litre and mix well.
You can then syphon into suitable glass bottles (one that has held pressure before, such as champagne or cava) with a pressure closure (cork or plastic cork with a wire cage). Alternatively you can use screw-top plastic pop bottles, but try to use 1ltr as a max size.
When making a sparkling wine you will need to keep the newly filled bottles somewhere warm for about 3 weeks after which you can move the bottles to a cool, dark place for a further week after which they will be ready to drink. If you have used plastic bottles you can tell how well they have gassed up by gently squeezing the sides - you should feel them getting harder over time.
Store the bottles stood up, not on a wine rack as the secondary sediment produced by the yeast in the bottle will leave a thin layer of sediment, and when you are pouring your wine I recomment pouring the whole bottle into a caraffe or jug large enough to hold the whole contents, making sure to leave all the sediment behind.
If you pour a glass at a time and put the bottle down between glasses then you are almost certain to disturb the sediment so the last few glasses will be cloudy - it shouldn't affect the flavour by much but it is not what you want to see.
Hope I have been clear in my explanations.
Andy
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