Reuse skins/lees cake

[LazyAcres]

Fermentation for my 5gal frozen must cab sav has just finished and I pressed it into a little more than 3 gallons of wine.
My idea is to reuse the press cake on a new kit from cab sav juice concentrate (Fontana 6gal) to let it ferment on the skins.
Do I need to add new yeast, or will the yeast in the old skins/lees will be enough ?

 

[Ajmassa]

The old skins will do the trick handily. It will take off like gangbusters without any more yeast needed.

 

[winemaker81]

If you're not using the pomace immediately, freeze it to avoid having it rot or grow mold.