Step 1: Preparing the dressing
In a mixing bowl, begin with the salt and pepper. Add vinegar, egg yolk and mustard. Beat well. Drizzle olive oil to emulsify, then add walnut oil.
Step 2
Finely slice Le Ballot cheese and set aside.
Step 3
Assemble all salad ingredients, add a bit of dressing and mix. Finish off by placing the cheese atop the salad, and serving immediately.