Fill the Tupperware with absorbent paper. Make sure to cover the entire interior surface.
Add a little liquid dish detergent. It doesn’t have to be in large quantities, a splash will be enough.
Pour warm water into the container. The water will help activate the detergent and allow it to get rid of grease stains.
Close the tupperware with its lid and shake it vigorously for a couple of minutes. This will allow the detergent to act on the stains and the absorbent paper to collect the grease.
Open the tupperware and add a little more absorbent paper torn into small pieces. Shake it again.
Let the mixture sit in the container for a few minutes. This additional time will allow the detergent and absorbent paper to work deeply on the stains.
After letting it sit, remove all the contents of the Tupperware and rinse it under running water.
If you notice that there are still stains, you can repeat the process.
With this method, you will not only make your tupperwares look clean and stain-free, but you will also prolong their useful life.

It is an efficient and ecological way to take care of your kitchen utensils and ensure that your food is stored in optimal conditions.

So, the next time you see those annoying stains on your Tupperware, you’ll know what to do. Give it a try and you won’t regret it!