Simple Vinaigrette
1 T minced scallion (or onion or similar member of the allium family)
1 T finely-chopped basil
1/4 t freshly-ground pepper
2 T white balsamic vinegar (or rice vinegar, pomegranate vinegar, or whatever you prefer)
2-3 T olive oil (or walnut oil)
Combine scallion, basil, and pepper in a small bowl.
Add vinegar and stir.
Add oil 1 T at a time, whisking vigorously each time.
That's it!