Is it true that lettuce "rusts" quicker if you cut it with a knife?
By Heather
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Stainless steel knives will not rust your lettuce. People used to use knives that rusted but these days few people do.
This has been a long running dispute among professionals and novices alike for decades, maybe even centuries, and I don't think anyone really knows with any scientific certainty ;-)
I've prepared lettuce both ways for over four decades (for time saving I prepare enough lettuce for the week) and have seen no discernible difference between those two methods. However, I have noticed that a dull knife versus a sharp knife can make a difference. Probably because a dull knife is more prone to 'crush/weaken' the edges.
The one thing that will rust/brown lettuce more quickly than how you prepare it is moisture. If you line the storage container with a paper towel or two, put in the prepared lettuce and then top with another paper towel or two your lettuce will last much longer because the towels draw the moisture away from the lettuce.
I understand if you cut lettuce using a chef knife, slicing off what you need then wrapping lettuce in wet paper towels. The lettuce would last longer.
Yes, it is true.Tear lettuce with your hands or use a special plastic knife for cutting it!
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