Bart, I've got an old edition of the book "The Art of Making Wine"by Stanley Anderson. His recipe is below. I've used it a number of times with California red grapes and was always pleased with the results. He mentions at the end of the recipe that the wine tends to be a bit thinner. I compensated by leaving the second batch of must a little longer before drawing it off the skins. Good luck.
Jim
RECIPE 45. SECOND OR FALSE WINE
Don't be deceived by the name: there's nothing second-ratea bout this wine. It gives you an excellent wine for the price of the sugar and a little effort, and at least doubles the volume of wine you get from your grapes. Furthermore, it eliminates the work of pressing the pulp and is usually ready to drink in half the time of your first-run wine.
Glance back at Recipe 41, steps 12 and 13. You have drawn off the free-run wine and in the bottom of your primary fermentor lies a mbutt of skins and pulp mixed with partly- fermented new wine. This is the basis for your second wine.
Now proceed as follows:
1. Add to the primary fermentor the same volume of water as the new wine you have just drawn off. Also add, per imperial gallon (160 oz) of water:
2.5 Ibs. sugar
3 tsp. acid blend
1 tsp. yeast nutrient
1-4 tsp. grape tannin
(The pulp is richly laden with yeast, so you don't have to add any more yeast.)
Stir thoroughly and cover.
2. Stir twice a day for 5 to 7 days.
Using breastrets with red wine 92fasteddy999 Accuvin has paper strip, colour change based tests for several variables, including free S)2. They have 2 colour strips for that one - for low range 0-40ppm and for 40ppm...
3. When the S.G. has dropped to 1.020 or 1.010 siphon off the new wine into secondary fermentors and continue in exactly the same way as with the first-run wine. You now have double the wine for an extra 25 cents a gallon! You can repeat the whole process and get a third run of wine off the same skins. This will have just the same alcoholic content as the first two but will naturally be very thin. Still, there are many people who enjoy a light-bodied wine.
when to degasThe overly simple answer is never. If you bulk age long enough there will not be a problem with fuzziness. It will escape on it's own without the bruising action of degbutting...