Most of the time we don't always finish the bag of potatoes we buy and end up having to throw half of them out as they start sprouting very rapidly. You must have always wondered what measures could be taken to keep them from sprouting so fast. The key to keeping potatoes fresh is twofold: Keep them in a cool, dark place. Also, don't store them near onions, bananas, or other fruit as this will encourage them to sprout faster. If you have a dark, cool closet away from the heat of the kitchen, store them there. Also, it's best to take them out of the plastic bag and put them in a basket or breathable cotton sack. And finally, make sure they are totally dry before storing long-term. Damp potatoes will rot or sprout faster.