Mince shallots (for the ciseler technique, view the instruction video above in the need-to-know section).
Set aside.
Make the Vinaigrette
Combine extra-virgin olive oil, champagne vinegar, white balsamic vinegar, minced shallots, Dijon mustard, Herbes de Provence, salt, and ground pepper in a mixing bowl.
Whisk the ingredients together.
Let it Rest
Allow the vinaigrette to sit at room temperature for 1 hour.