Before I got really into cake decorating, I made a simple cake with chocolate icing. I decided to take a dollie and put it above the cake, and then sprinkle sugar so it would fall in the flower pattern. As we all sit doen to eat, by uncle tastes the cake and says, "Are your sure you did every thing right?" It turned out that i sprinkled on salt instead of sugar!
I had a similar incident, but with coffee. At church I brought coffee to several men in the men's class and my husband was the only one who asked for sugar. In the cabinet were bowls filled with what appeared to be sugar. It was salt. I put a full teaspoon of salt in my husband's coffee. He said he was in class trying not to gag but couldn't figure out why no one else was not.
He's never let me forget it. 
Michele
A similar thing happened to me! I was making cream cheese mints and instead of rolling them in sugar before molding them I rolled them in salt. Fortunately, I taste as I go, so I only got through half the batch before I realized what I was doing! I used the salty mints for a joke with my dad...he couldn't figure out why everyone else was enjoying their mint, but was too polite to say anything!
jajjja well something like that happen to me
i was in a hurry ...thinking what i will do next ....i was making the buttercream and forgot ! completly that wilton has the same bottle different color but..for merengue powder and gumtex...
i put gumpaste in my buttercream!!!!!!!!!!!!!!
i was saying hmm smells yacky? 
then remember oh! i hope i did not put gumpaste and yeah!..i did...... 
sounds like something I would do at least it was not for a paying customer
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