Not entirely sure this is the right subreddit but hoping someone knows what’s going on. I made some banana bread and covered it with foil. Yesterday I noticed the same weird little holes in the foil and then little spots on the banana bread under the holes. I cut the part with the spots off the banana bread and put on a fresh piece of foil. Then today, there’s more holes on the fresh foil and more spots on the bread under the holes! What is going on?
by Mentally_scrambled
34 Comments
Reaction of the aluminum with acid/salt from the banana bread. Check your banana bread for metal spots. It’s better to cover fruit bakes with plastic film.
Edit: you did. What basically happened was that you created a battery. This can also happen with other fruit bakes or dishes.
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Did you have it covered the entire time it baked? I usually just tent it lightly with foil for the second half.
Banana bread battery. This happened to me when making lasagna…. Poor lasagna.
It’s a reaction with the aluminum. It happens with things like lasagna and foil, too. Place a layer of Saran Wrap between the bread and the foil.
I’ve had it happen with aluminum foil covering stuff with tomato sauce — I would not have thought banana bread was that acidic. I guess I won’t wrap banana bread in foil any more.
I had no idea banana would do that, interesting
You made a “lasagna cell” or “lasagna battery”! It’s a chemical phenomenon that happens when you have something acidic between two metals (eg your pan and the aluminum foil). Basically the aluminum was corroded.
It is commonly seen with lasagna (hence the name) due to the acidity. Surprising it happened with your banana bread too!
Don’t eat the spots with corroded aluminum!
When I worked in a professional kitchen, we would cover with particular wrap and then with foil. Kept everything nice and protected. The plastic wrap wants to peel back sometimes if it’s the only cover you use, which is at least one reason we did both.
This also happens with any kind of tomato sauce
I’ve learned so much from this thread lol. Makes sense now why the grocery store sells aluminum pans with plastic lids.
BBB (Banana Bread Battery). Happened to me when I made a lemon cake and covered it in foil. Also completely ruins the taste :,)
Does this only happen if the aluminum foil is in contact with the banana bread? I’ve used aluminum foil as tenting before, so I don’t know if I should be watching out for this.
Acid made holes in the aluminum
Hi there ….it happens with all food pretty much I cook in a Dementia/Alzheimer’s assisted living facility I’ve noticed the aluminum foil doing that over the last several years ….I can’t figure it out myself …it didn’t always do that…it’s really weird…
this happened when u use a metal plate that’s not aluminum. The two metals will react. use glass next time or an aluminum plate
Why did my brain think the first photo was in B&W?
Wait how does it create battery from bananas ?
You can make a battery outta banana too apparently
Try parchment paper next time. It is food safe, so while parchment paper would not taste good as meal on its own, it won’t hurt you if there’s a little bit in your banana bread.
When you have foil over food in metal pan you are creating a battery that corroded the foil leaving holes, can be really bad when you have 2 different metals
Idk what’s happening to your aluminum foil but that banana bread looks PHENOMENAL
Aluminium moths
Slice off the top, youll be sweet
I think your banana bread is a little acidic. Put a layer of parchment paper or waxed paper between the bread and the foil.
You made a ~~lasagna~~ banana bread battery
Drop the recipe 👀
If something acidic came into contact with the aluminum it eats it.(Maybe that happened ?)That’s why you can’t cover tomato sauce with aluminum foil only.
Any acid will eat through aluminum foil (eventually). If it’s hot, it happens faster. It’s really not advisable to use aluminum foil for acidic or salty foods. You are better off with plastic wrap or a plastic container with a lid.
You’ve got to be kidding me. I make fruit breads all of the time and always keep them in aluminum foil. I never noticed this happening to mine but the thought that it could is crazy. I learned something today. Thanks for the info. Plastic wrap it is.
This is why I wrap food in plastic and then foil.
Wondering if I could plug my phone into it to charge lol
Energizing recipe!
Why are you using aluminum foil anyway? You don’t need to, bake it at slower temp 165 or 170 for about hour, test with skewer