You can easily substitute fresh corn with either frozen or canned corn in the Mexican Street Corn Salad. Here's how you can use each option: Frozen corn: thaw the frozen corn completely before adding it to the salad. You can either leave it in the refrigerator overnight or rinse it under cold water. Be sure to drain it well to remove any excess moisture. Canned corn: drain the canned corn before adding it to the salad. Keep in mind that canned corn may have a softer texture compared to fresh or frozen corn.