Step 1 Combine the shallots, vinegar, lemon juice, salt and pepper in a medium bowl and stir to combine. Add the oil in a slow, steady stream, whisking constantly to combine. Taste for seasoning and add more salt, pepper or lemon juice if desired. This makes about one-third cup vinaigrette, more than is needed for the remainder of the recipe. Use the vinaigrette or transfer it to an airtight container and refrigerate it for up to 3 days. Bring it to room temperature before serving.