Mistake that became a discovery?
Just reached for the cinnamon to put on some yogurt. But I'd moved it a couple days ago, and instead got the cumin (same type of jar, similar color, similar location). Only discovered AFTER I sprinkled some on the yogurt.
Figured I'd taste it before I threw it out.
Not bad at all.
In the end, added some cinnamon (thinking of Middle East & Indian spice blends that have both).
So...what mistake or error have you made that was coming up roses?