Rutini fortified Malbec

Many California fortified red wines have been made from Zinfandel, Cabernet Sauvignon,etc and are handled and served in about the same way as classic Oporto. I would guess that your fortified Malbec could be also. I don't know how ready your wine will be. Malbec can be quite tannic, and, like vintage port, it might need a few years of age before being at the best. It all depends on how the wine was made. The wine likely will keep well for quite a while. To be on the safe side you could bottle part of it in small, screw cap bottles and keep in in the refrigerator until you decide to drink it. You will then need to let it warm before drinking, for a young port-like wine, especially if quite tannic, does not taste very good to most people when served at refrigerator temperature.