I made purple buttercream and added Wilton violet to the white frosting in good amount, not realizing it would change the taste. Delivered the cupcakes to the customer this morning and she was super happy looking at the decoration/flowers.
I tried a vanilla cupcake with the purple frosting just now and to my dismay, the frosting left a bad taste in my mouth 
I had 6 cupcakes with purple frosting that I gave the customer.
I was thinking, should I make another batch of 6 cuppies, frost them in icing colored a bit less deep than the morning batch and tell her that I tried the frosting just now and found it to be bitter so wanted to give her a better batch? I don't think they would have eaten the cupcakes by now since it was for an evening party.... please advice Thanks so much!
Your best advertisement is word of mouth and return customers. If you are aware of a problem and still have time to fix it then by all means I would fix it! You dont want an upset customer later on wanting $$ back or have guests talking bad about your product. You want them to remember you as the beautiful display, great taste, and the honesty of going back and correcting a mistake.
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