In a blender, combine all the ingredients until finely chopped, not puréed. Season with salt and pepper.
Any remaining vinaigrette can be saved in an airtight container in the refrigerator for 3 days and should be brought up to room temperature before using.
Grilled Summer Squash, Avocado, and Feta Salad:
Preheat a grill or ridged griddle pan, until very hot. Drizzle the onion rings with a little olive oil and season with kosher salt and pepper. In a bowl, toss the zucchini and squash with olive oil, salt and pepper. Grill all the vegetables until the onions are softened and zucchini and squash are nicely char-marked.
In a large bowl, combine all the grilled vegetables (pull the onions apart into rings), dill, mint, oregano, and thyme.
Toss with 1/3 cup of the vinaigrette to coat and adding more vinaigrette, if desired. Season with sea salt and toss again.
Scatter avocado slices and feta over the top.
Notes
This salad tastes great warm or at room temperature.
It also makes for an ideal side dish for steak or grilled fish.