Had this happen once when I was training a new barista. Just asked the customer to try it to make sure it was right and then made their new order. Regulars are good measuring sticks for training so the tossed drink isn't really a waste, you have to make and toss a lot of drinks at first.

Here are a few examples of my pixel art pinups!
If you’d like, I can turn your commission into a signed print once it’s done 💖

Request yours here: ko-fi.com/yumykon/comm...