I've heard of these and seen them around. I know they're mainly for flavouring candy and chocolate, but I was wondering if you could flavour icing with them? And if so, does it change the colour of the icing a lot?

You can flavor icing with them. The colored ones will change the color of the icing a lot, but if you're buying the tiny bottles, you can tell which ones are colored and which are not.

DITTO !!!

I use them for my icings all the time. I use the pineapple and orange flavors the most. And they have so many flavors to choose from.

I use them also and love them .... if they are tinted they will tint bc/fondant

They are wonderful! I use the cheesecake flavor for my cookies!

I've tried the princess cake and cookie emulsion, very nice flavor.

Are they super concentrated? How much do you use for a batch of icing?

I used a teaspoon of emulsion because it called for a tsp of vanilla. I wasn't sure myself, so I replaced the vanilla ext. with the emulsion. It tasted good to me. Do you all still use the vanilla and add the oil/emulsion with it?

i just picked up a bottle of the princess cake/cookie emulsion. ive been using it all week-end. it is very thick - i was shocked when i first poured it. i think its stronger than what im used to using..regular vanilla.
so go light at first then adjust as needed. it did tint my icing alittle not too much - when i needed white i just added white color to my buttercream.
HTH

I only use 1/4 teaspoon, or maybe 1/2 if I want it a little more flavorful. I use these in my cakes too!! Yummy.