Easy to use: just install the Rubber Stopper with Hole with holes on the top of the Fermentation Plug container, insert the Fermentation Plug device into the rubber stopper, pour water water in theFermentation Bubbler device with Stopper and closing the lid to ferment red wine. One-way valve design: Fermentation Bubbler with Stopper is designed to isolate the air well during secondary fermentation to prevent oxidation, and allow the whole fermentation process to proceed automaticallyand discharge at room temperature without manual control. Our fermentation bubbler group has a wide range of applications, which is very suitable for food preservation, cabbage, kimchi and sauerkraut fermentation, as well as wine, beer brewing , sake, etc. The Reusable Fermentation Plug does not require manual control and is easy to clean, which is very useful for red wine fermentation. Made of safe, non-toxic plastic and silicone. Features: Product Name: Fermentation Bubbler Material: food grade silicone
