Mold doesn't grow that fast in a refrigerator overnight.
I'd bet some ingredient reacted with your baking powder or baking soda.
I've seen something similar before in three separate circumstances: instant oatmeal that turned blue when mixed with iodine-treated water (day after day on a camping trip); garlic mixed with yogurt turns blue when heated; blueberry pancake batter turned green overnight.
cooking.stackexchange.com/users/4428/J. Win.
This is normal.
The batter is not bad and is a chemical reaction.
Just stir it up.
I have been eating pancakes for years and always refrigerate the extra batter.
Its good for a couple of days.
cooking.stackexchange.com/users/12735/dale
Was it just a layer of green on top or was the mixture itself a green colour?
The former would suggest it went mouldy; the latter that some chemical reaction occurred to alter the colour.
You can also give it a good sniff...
if the smell is at all unpleasant or noticeably different, this can be a sign that something went off.
Even if it didn't go "bad", I'd probably still toss it and just make half the amount next time, for a few reasons:
The change in colour might also indicate a change in the flavour.
If the batter is green, your pancakes will likely come out an unappetizing colour too.
I never enjoy eating something that I'm wondering if it might make me sick.
It's just not worth it.
The pancakes will almost certainlynot rise well after the batter hassat overnight (anything with bakingpowder should be cooked as quicklyas possible after mixing the bakingpowder with the wet ingredients).
cooking.stackexchange.com/users/4504/Allison
this happens every time I make buttermilk pancakes, the next day the batter looks grayish!!
I mix it up well and cook with it
and it's fine!
I had some tonight for my dinner!!
I always use Martha Stewart's recipe.
cooking.stackexchange.com/users/25348/nancy m miller
It's funny, because my pancakes never rise well on day one of the batter mix.
Then after standing overnight.. I notice this chemical reaction...
I used to think it was mold...
but others are right.
That is too fast to become mold.
But, the pancakes always rise better...
higher... the next day or two from the same or mixed additional batter.
So my original question was what kind of mold is it that makes the pancakes rise so well and become so tasty?
I assume this is just a time thing for the mix to get into gear.
I don't know why it is, but saving some of the old mix for future mixes also seems to work for making them rise better and be lighter and tastier.
cooking.stackexchange.com/users/55423/Dave Long
I like making buttermilk pancakes but usually the batter is too much for one day, after I put the mix in the refrigerator, the mix was a greenish color the next day. Does anyone know if this means it went bad or is this just a characteristic of buttermilk?
Buttermilk pancake mix is green?
cooking.stackexchange.com
<batter><buttermilk><pancakes>
cooking.stackexchange.com/questions/11356
cooking.stackexchange.com/users/None/
Unles the smell is unpleasant or noticeably different, it is probably just a reaction with your baking soda or baking powder and the batter has not gone bad at all. This sounds normal and is just a chemical reaction with the baking powder.
This is normal and a chemical reaction. Just smell it to decide if it's gone off.