On Mon, 26 Jan 2009 14:44:14 -0800, Dimitri wrote:

> "Goomba" > wrote in message
> ...
>> Dimitri wrote:
>>
>>>> Back in my Home-Ec days we were taught about the actions of these
>>>> ingredients which are- Baking powder recipes act on heat, Baking soda
>>>> recipes act on acid.
>>>
>>> I think that was an oversimplification although I am sure it's true.
>>>
>>> The acid in the powder starts an immediate reaction when mixed with the
>>> soda & liquid. It's the # 1 reason to pre-heat your oven.
>>
>> It was about as much as most 7th grade girls had patience to learn, I
>> suppose?
>> I recall the lecture expanded on it some in warning to not mix up batters
>> with these agents and let the batter sit around or you'd lose
>> effectiveness.
>> Goomba
>
> Seventh Grade I think we were studying transubstantiation or getting the tar
> beat out of us. I forget which
>
> :-)
>
> Dimitri

not both at once?

your pal,
blake