If a wine has a heavy sediment, it is necessary to decant it to carefully separate it from its deposit.
You need a clear carafe, preferably crystal, and a candle.
Light the candle and start to pour the wine slowly from the bottle, letting it slide down the inside of the carafe and checking through the neck of the bottle in front of the flame that the wine remains clear.
As soon as the wine appears murky, stop pouring. Decant the wine immediately before serving.
Keep the original bottle and cork in view on the serving table.