I prefer barbecued corn on the cob, but don't always have the chance to cook it quickly after buying it. I know that fresh corn loses its sweetness fairly quickly if you don't lock it in by cooking it, so I want to blanch it in the microwave enough to retain the flavour but not so much that it will be overcooked if I barbecue it.
Is this possible, and if so, for how long should I microwave the cobs?