The next element we need to consider for our open-source Roussanne, is target TA (total or titratable acidity). Since pH is the measure of the intensity of acidity, I will include both of these together in this post.

Roussanne is a high acid variety so we should have good acidity to work with right off the vine. If needed, we could acidify with tartaric acid which is very common in California winemaking and not something to be avoided, unless necessary, like watering back. The high acidity of the Roussanne can be blended back some with the addition of fatter varieties like Marsanne or Chardonnay which we will explore further as we go along.

So the main decision here is the intensity of the acidity, measured by the pH. The higher we go makes the wine more impressive by itself but sacrifices it’s friendliness with food. My preference is for the most food friendly wine here but I’m open to your comments and suggestions.

Next, we’ll get into yeast; such fun!