In a small bowl, whisk together lemon juice and oil.
Stir the oil/lemon mixture into the corn mixture. Add salt and pepper to taste (optional).
Refrigerate at least 30 minutes to allow flavors to develop.
Note
Note: Shallots or green onions (scallions) can be used in place of the red onion, especially if you cannot use up a whole red onion before it goes bad.A shallot can be used in place of the red onion, especially if you cannot use up a whole red onion before it goes bad.