I made Indydebi's buttercream and also a batch of cooked flour frosting and added the Princess cake emulsion and some vanilla to both recipes.

However, after keeping them out overnight, they taste soapy and don't have a pleasing flavor at all. Any idea on how to improve the flavor? I don't want to throw them out since I made big batches for orders today

TIA!

I have made both of those recipes and I haven't used Princess so it's most likely the emulsion. How much did you use? You could try adding more vanilla and see if that helps, but I honestly don't know.

Thanks Annie! It didn't help.. I just made some more so dunno what to do with the soapy tasting one...

What is Princess Cake emulsion?? I'll be sure not to buy it!

Toss it! I know it sucks, but I just tried a new scratch recipe last night that didn't work out, plus wasted some cute Valentine's cupcake wrappers I bought.

Sometimes it just happens.

I tried the Princess cake emulsion once and never again. Don't recall it as being soapy, but it was NOT good IMO.

Princess cake emulsion is an extract that can be used instead of vanilla extract:
https://www.lorannoils.com/p-8346-princess-cake-and-cookie-bakery-emulsion.aspx

The soapy flavor probably came from the powdered sugar, I would toss any PS you have from that batch. More info at the link below:
http://www.answerbag.com/q_view/512571

Thanks everyone! I liked the Princess emulsion in the frostings and cakes I've made and never had it taste soapy... as Jason said, must be the PS then... wonder why.. it was a sealed new bag!

Thanks for the help!