From Vine to Glass: What Happens After Harvest Red or white — the difference starts at the crush. White grapes are pressed fast to stay fresh and crisp. Red grapes ferment on their skins for days, building color, tannin, and depth. At South Dominion Vineyard, every decision — timing, temperature, yeast — is intentional. Because great wine isn't accidental. It's crafted, right here in Cambridge, NY.