Jack's chokecherry recipes call for 2 to 2.5 lbs added to a gallon. If you use 12-13 lbs to make 6 gallons you will be just about right, not double. If you want a port style wine, then you probably would want more fruit, use a high tolerance yeast and feed it sugar slowly so you can reach 18-19%. You might look at some typical port recipes and see how much fruit they use compared to regular wine recipes. If they use 50% more, then use 50% more chokecherries.
Ray
I was thinking of using the recipe on Jack Keller's website:
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(2nd on there...) but was wondering of the different outcome of using raising vs. grape concentrate but decided on using grapes. I hope if will come out nice...
I wonder if this is the kind or recipe you can easily double up the amount of fruit... What if I used Jack's recipe but triple all ingredients but instead of using 6 pounds of chokecherries I would
12-13 ? I would have to pay close attention to the SG but I wonder if I could obtain a port-style wine with that...
Would anyone have any suggestions on how to tweak Jack's recipe to get a port-style wine at the end ?
Thanks everyone :)