Harvest timing is the most consequential call made in the vineyard. It determines not just yield, but the structural integrity, style, and ageing trajectory of the wine. While sensory cues such as flavour, tannin evolution, and berry condition are essential, three analytical parameters remain central to decision-making: Baume, titratable acidity (TA), and pH. These are not isolated metrics; they function as a system, and it is their alignment that defines true ripeness. Baume