- 3 pounds small (1 1/2-inch) boiling potatoes
- 2 1/2 tablespoons tarragon vinegar or cider vinegar
- Flaked or fine sea salt to taste
- 1 1/2 tablespoons extra-virgin olive oil
- Cover potatoes with salted cold water by 1 inch in a 4-quart pot and simmer until just tender, about 10 minutes. (They will continue to cook after draining; do not overcook or they will break apart.)
- Drain potatoes and rinse under cold water. While potatoes are still warm, gently toss with vinegar and salt. Cool potatoes to room temperature, stirring occasionally, and gently toss with oil.