Mark Thorson wrote:
> Polly Esther wrote:
>
>> I was just reading a little of Shirley Corriher's "CookWise". She mentions
>> that as cornstarch ages sitting around in a box in the pantry it will have
>> less and less of a thickening ability. There's no 'best used by' sort of
>> date on my cornstarch but I'm thinking 1947 might be close. We know to
>> check the dates on baking powder and other items. Better replace the
>> cornstarch too. Polly
>
> What do you suppose it turns into?

Something that acts a lot like concrete but that happens to be
biodegradable.