Many times after you've finished dinner, you realize that there's still a little wine left in the bottle. Rather than pour it out or carelessly leave it on the kitchen counter, follow these suggestions to best preserve that special wine to enjoy the following night. While there are a number of products and methods used to preserve wine (from filling the partially filled bottle of wine with inert gas, to using a hand vacuum pump), here's a simple and effective way to save your leftover wine: pour the wine into a smaller container, which will help protect it from oxygen. A spare 375 mL bottle works great, especially if it has a twist off top. Keep it in the refrigerator to further prolong its life. Wines with higher acidity or more aggressive tannins tend to keep longer on average, but most wines will start to turn after day two or three.