Leaving dirty dishes to soak overnight can make them easier to clean for several reasons:
Softening of Food Residue: When dishes soak in water for an extended period, especially with some detergent or soap, the food particles and residue soften and loosen. This makes it easier to scrub or wash them off the next day.
Time for Chemical Reactions: Soaking can allow time for chemical reactions to take place between the detergent or soap and the food particles, further breaking down the grime and making it easier to remove.
Hydration of Dried-On Food: Sometimes, food can dry and stick to dishes if left for too long after cooking. Soaking the dishes rehydrates the dried food, making it easier to remove.
Loosening Grease and Oils: Soaking can help break down and loosen greasy or oily residues, making it simpler to wash them away.
Less Elbow Grease Needed: The softened and loosened grime requires less scrubbing effort, saving time and reducing the need for excessive elbow grease.
While soaking can be effective for most dishes, it is essential to avoid leaving certain materials (like wooden items) submerged for extended periods, as it may damage them. Additionally, you should rinse off any acidic or corrosive substances before soaking, as they may react with the water and cause further issues.
For heavily soiled dishes, you can also consider doing a pre-soak before going to bed, and then giving them a thorough wash the next day. This way, you strike a balance between letting the soaking work its magic and preventing the food from hardening too much.