If using frozen corn, allow to thaw before preparing salsa. Chopped jalapeno very finely. If you do not like heat, remove seeds, before chopping. You may also want to start with 1 teaspoon of jalapeno before adding the second teaspoon.
Add chopped cilantro, salt, and green onion tops. Stir in lime juice. Stir well to mix the salsa together. Refrigerate for a couple of hours before serving. This will allow the flavors to marry together.