My wine acid elevator speech...I'm simplifying a bit here, but I think this largely works...
pH governs the micro-biologic climate - in other words, pH is what must be in range for yeast and MLB to ferment and how much SO2 you need to keep other stuff from contaminating your wine.
TA is titratable acidity as tartaric. It is not just tartaric but all acids (including oxalic) expressed as tartaric. You can theoretically measure TA as malic or as citric as well, but convention is tartaric. TA is what governs taste. The two tend to move in the same direction but not always. As an example, I had two whites last year, post ferment one had TA 9 and pH 3.4, and the other TA 10 and pH 2.7.
TA is linear; you can add acid and get a predictable linear increase in TA. pH is logarithmic and is affected by all sorts of buffers and other stuff. You cannot get the same predictable changes with acid additions.
Same with calcium or potassium (bi)carbonate. TA linear, pH non-linear. And 1/2 tsp/gal calcium carbonate addition can cause you to overshoot. My final adjustments are more like 1/4tsp/gal or less. Two other quick points - calcium carbonate requires special care post-ferment so most people use potassium carbonate post-ferment and calcium pre-ferment. Also, calcium salt has less effect on pH than the potassium salt so if your pH is already relatively high, but you need to bring the TA down, calcium salt may still be the one to use.
tl;dr - TA is taste, pH is bug climate, measure both.
Excellent info - must be a tall building, tho. LOL
Again - I defer to those more knowledgeable than I. I was thinking - "baby steps" here.
http://wijnmaker.blogspot.com/2009/09/rabarberwijn-1-rhubarbwine-1.html
Check this out.
Something to consider for future batches.
Don’t mean to high jack this thread but wildhair can you post a pic of that jig you made to hold the bottle while you put the cork in?
Thx
Joe
My wine acid elevator speech...I'm simplifying a bit here, but I think this largely works..
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