Wine bottles are traditionally stored lying on their sides. I am toldthis is to prevent the corks from drying out and leaking. With anincreasing number of wines now being sold in screw-cap bottles, is itstill necessary to store wines on their sides?
Not really, particularly as far as screw-cap bottles are concerned. But you probably already have wine racks designed to hold bottles on their sides, so you may as well use them for storing your screw-cap bottles as well. They make quite economical use of space. There’s no harm in storing your wine upright, even if it is in cork-sealed bottles. Controlled tests have shown there is very little drying out of corks anyway, if the bottles are stored upright—for the first three or four years. The moist air inside the bottle apparently keeps the cork moist enough.