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

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?

Dextrin.

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?

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.

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

How long is ages, I wonder. I guess I should look in the book,
which is in this very room. I don't use it extremely quickly but
don't recall ever having an issue with it.

--
Jean B.