Wine Hack #1 - How to Keep Your Leftover Wine Fresh
Once a bottle of wine has been opened, it will start to oxidize. Oxidization is not always negative. When a red wine is allowed to breath, it will improve the flavor. It helps to open up some of the wines aromas and flavors and soften the harsh tannins. However, when a wine has been exposed to air for too long it will start to lose its fruit flavors and aromas. It will turn a darker brownish color and eventually start to taste stale and flavorless.
If you open a bottle of wine and don't finish it, the wine that is left in the bottle will have more space to come in contact with air. By simply pouring the wine into a smaller container like a water bottle or mason jar, it creates less space for the air. It is important to make sure the container is small enough so that it is filled all the way to the top. This way there is virtually no air in with the wine which will keep it fresh for longer.