I don't have any particular theory, but perhaps identifying what sort of
oil you used on the parchment paper would be helpful to someone else.
> In article <70d4cc...@mid.individual.net>,
> mustan...@nym.hush.com says...
>> i'm sure a picture would describe this better, but on Friday evening
>> i made bagels for the first time. i used Reinhart's procedure from
>> BBA.
>>
>> this morning i boiled them in the alkalized water for a couple of
>> minutes. on the bottom of the bagel, black blotches appeared. it was
>> only on the bottom that had been resting on a half-sheet pan in the
>> fridge since Friday night. the pan was lined with very lightly oiled
>> parchment paper. the spots were not present before the bagels went
>> into the water.
>>
>> so i'm guessing this was some sort of chemical reaction. is this
>> normal? it certainly didn't affect taste or texture, but visually it
>> was kind of odd.
>>
>> i will definitely be making these again, and i'll be sure to take
>> photos along the way so i can better show what i'm talking
>> about---assuming it will happen again.
>>
>> any thoughts, absent any visual evidence?
>>
>> --Sal.
>>
>
> Were the pans aluminum?
>
> Bill
Here's a link to a discussion at The Fresh Loaf about the same thing.
http://www.thefreshloaf.com/node/4778/dark-spots-my-freshly-baked-bread
Barry
I have made a few dozen bagels over the years with that very same recipe.
Nary a black spot. On the other hand, I always use a tablespoon of malt
syrup.
As with the malt syrup, I have used up a few spray cans of veggie spray on
parchment. Again, nary a black spot around.