INGREDIENTS
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1/2 cup red wine vinegar
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1 small onion, sliced and grilled until tender
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6 basil leaves
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1 teaspoon thyme leaves
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1/4 cup crumbled feta cheese
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2 tablespoons Dijon mustard
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6 cloves garlic, smashed
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2 shallots, thickly sliced
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2 tablespoons dried Greek (yes, Greek) oregano, or less to taste
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2 to 3 teaspoons kosher salt, or to taste
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1 tablespoon coarsely cracked black pepper
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3/4 cup extra-virgin olive oil