@AncoraImparo , I am a beer brewer since 1994, and just recently decided to start making Wine again (last time, 2017)
I had a hard time trying to find if you can repitch new wine must, on top of the Lees at the bottom of the Conical from a batch just transferred to my Brite Tanks. I was worried, since I did NOT see any heavy yeast cake, like you do with a just-fermented out beer. I used Lalvin Bourgovin RC-212 wine yeast. The previous batch of Zinfandel wine, I just purposely stopped the fermentation at 1.007 SG (1.8 Brix), crashed cooled it to as cold as I could, (44F) for 3 days, to drop the yeast out
I then bought 12 more gallons of Pinot Noir juice, from California. I dumped the 12 gallons onto the remaining lees at the bottom of the Coni, Aerated the fresh must good, added some yeast nutrients, and set a new computerized temperature profile to ramp the cold new must up from 52F to 79F, over the next 4 hours.
It was
very successful ! The new Pinot Noir started to blow off CO2 in only a few hours.
My Questions still is - Is it "common" not to have a thick, heavy, yellowish/white, yeast cake, at the bottom of your fermentor, like beer.
And #2, is it also possible to repitch new must juice onto the Lees from a previous batch, as long as it still is fresh and not reused more than 2-4 times??
I can not be the only one, that is using Uni Tank, Conicals for fermenting wine.....