Buying and Storing Onions - as part of the expert series by GeoBeats. When picking an onion at the grocery store you want to look for something that does not have any bruises or blemishes, and has a nice skin color. From red, to white, to yellow onions, it does not really making a difference. You can switch them out in your recipes, but you do want to look for something that does not have any bruises or discolorations. When you get your onions home always keep them out of direct sunlight and if you can, in a dark area. The weird thing is, you do not want to store your onions with your potatoes as one of them gives off a gas that kills the other. So keep your onions and potatoes separate in a cool dark place, or just out of direct sunlight. I keep my onions on the counter in a cute little container. That way I know they are right available for me.
