2022 Moraine (60/40 blend of deacidified homegrown Marechal Foch and Regent on SO4 rootstock on glacial moraine soil on a south facing hillside 3 degree slope 5 miles noth of Blaine, Washington. (malolactic fermentation, potassium carbonate and Acidex) and tannin reduced (via egg white) from hand destemmed grapes fermented with RC212 for 2 weeks. These grapes were unchaptalized but had too much tartaric acid some of which has settled out as potassium or calcium tartrate after being outside for 3 days with water and vodka in the airlocks so they wouldn't freeze. Most of this was used as a blender into a repaired Washington Syrah from 2020 (had a burnt rubber tire smell from low nutrient malolactic fermentation after RC 212 yeast fermentation + wild blackberry/dried elderberry table wine with a bit of black currant liqueur to make a balanced decent house red/cooking wine.
Back to the 2022 Moraine:
The acid and tannin are fine and in balance.
This is inky purple with a decent smell of, blackberries, red currants, black cherries, leather and coffee.
This has a good after taste and I will definitely make this again with or without the addition of wild blackberries and wild black cherries with dried elderberries.
The deacidification and tannin reduction i.e. 15 mL of egg white into 15 mL water plus a bit of salt with 3 day ice cold storage around freezing temperature worked perfectly.
I added nutrient to the RC212 ferment and got a good smell post malolactic.
High tartaric acid is attributed to low night temperatures during ripening in a cold drought. There was no wasp or bird damage on any of the grapes. The Regent were spaced at 4 feet and allowed to grow 12 single clusters on 4 feet of single cane. The Marechal Foch were spaced at 6 feet and allowed to grow 16 single clusters on 6 feet of single cane. Moraine on my property is basically powder rock mixed with sand and a bit of brown clay with about 6 inches of humus on top from lawn mower deciduous leaf compost from trees all over my property except for black walnut.
The grapes hadn't seen any rain for 3 months and I didn't water them.