1 bunch green onions, white and light green parts only, thinly sliced
1 cup lightly packed fresh herb leaves (such as basil, cilantro, chives, tarragon, or flat-leaf parsley), finely chopped
Instructions
In a large bowl, whisk together vinegar, lime juice, Dijon, salt, pepper, sugar, and shallot, and set aside for 5 minutes to let the flavors come together.
While whisking constantly, slowly drizzle in oil to make a dressing. (Make the dressing a day or two in advance, if needed, and chill until ready to use.)
To the dressing, add corn, tomatoes, green onions, and herbs, and toss well to combine. Season to taste with salt and serve at room temperature, or cover and chill until ready to serve.