I also use 4 cups TOATAL for this recipe. We just keep the ice water in a bowel right next to the grill. I also use a KichenAid immersion blender(four blade attachment) and we strain into a plain wire-mess strainer. I push all the remaining liquid through with the back of a wide wooden spoon. JUSY USE 4 CUPS WATER TOTAL, not 4 cups each time if you puree in batches. Don't be afraid to try this yummy soup!
This recipe was awful. I may as well have poured the water used to boil the corn into soup bowls and served it as soup. It was gritty and had little to no flavor. I would not recommend this and will never make it again.