Now you can grate potatoes in advance for kugel and yapchik and they’ll stay white!
For the times that Pesach leads right into Shabbos, I needed to come up with a way to have my potatoes grated in advance for this Yapchik. Previously, if I left grated potatoes in the fridge for more than an hour they would turn black.
So, I called my mother and she shared this hack:
Store grated potatoes in a container.
Cover with oil to seal in the air.
Then cover tight.
This will protect the potatoes from turning brown (or black!).
There will be a layer on top that will discolor, just scoop it off and the rest is ready to use.