Rickell's method works very well. I prefer it to the blanching method...I think the corn tastes fresher. I do blanch the corn if I'm going to cut it off the cob, though.
In regard to the corn losing it's sugar once it's picked, here's a little info that may be useful to you. There are certain new hybrids that actually continue getting sweeter after being picked. Illini Supersweet is the one I'm familiar with, but I believe there are several others. Of course, when you buy sweet corn, you usually don't know the variety, but if you're growing your own, consider some of the "new breeds".
The only drawbacks to these new types are that the seed is very pricey, and it's harder to germinate. If you decide to grow some next year, let me know, and I'll give you some hints on germination.
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