Ramps, wild onions that pop up in the spring, give this dressing both onion and garlic flavor. Use this healthy salad dressing to marinate flank steak or on a green salad with shrimp.
Combine oil, vinegar, ramps (or scallions), orange zest and salt in an 8-ounce mason jar. Shake vigorously until combined.
To make ahead: Refrigerate for up to 1 week; shake before serving.