A lemon, and yes, I am talking about the one pictured above, not a faulty car someone sleazy used car salesman sold you.
Lemons are supposed to be useful in warding off harmful spells or evil intent. Just cut in half and leave somewhere for twenty four hours (application of another useful herb such as pepper to strengthen). If they blacken quickly, more than just from the pepper, it is recommended to discard and repeat.
I think a much better usage is writing secret messages with their juice, when you aren’t using them to make lemonade or as a garnish on fish (I know a salmon dish that is particularly tasty with fresh lemon on it). I think I may have to demonstrate this to my son one day when his mother isn’t home. Then he can write a secret message and tell her she has to heat it up over a lightbulb in order to read it. Could be fun.
Until next time Gentle Readers.