Summarize the following:
Use roughly one quart (one L) of water for each cup (250 mL) of kernels.

Summary:
Bring water to boil in a large pot. Pour whole kernels carefully into boiling water. Boil kernels of corn for approximately four minutes or until tender. Drain water from the corn kernels by pouring the pot over a strainer placed in the sink. Plunge corn into ice water bath to stop cooking process. Use or freeze whole kernels of corn.