Took berry samples of the Cayuga White in the Grape Research and Foundation Vineyards and of the Seyval blanc in the Grape Research Vineyard. The sugar, pH and acid levels are as follows. Cultivar °Brix pH TA Cayuga White GR 15.4 3.03 1.095 Cayuga White F 13.1 2.89 1.292 Seyval blanc GR 17.8 3.07 1.148 … [Read more...] about Grape juice chemistry