Sour?

[BootsElectric]

I'm attempting to make something similar to a blue razz blow pop. If you've never had one it has a sour and sweet taste to it.
So I mixed raspberry, sweet tart,energy drink, a few drops of sour, and for some reason added sweetener.
So by adding the EM did I ruin its change of being sour?
I was being a fool and make a 30ml thinking" I got this" but it wasn't was I was going for at all. Turned out as just a raspberry flavor: (
I used
3ml Raspberry TPA
1.5 Sweet Tart TPA
12 drops Energy drink
4 drops TPA Sour
4 drops EM
50/50 pg vg

I want a super tart flavor. Can anyone help?!
One more question should I add blueberry too?

 

[Valanda]

I think part of the problem people have making this is that what is commonly marketed as "blue raspberry" is generally whitebark raspberry (Rubus leucodermis -- also known as black raspberry). Black raspberry has the tart taste naturally. It is not the same flavor as the more commonly found red raspberry. Trying to turn red raspberry flavoring into "blue razz" is like trying to turn orange flavoring into tangerine...

I have been looking for an ECF-approved source for black raspberry flavoring, but have yet to find one.

 

[BootsElectric]

There's a vape shop that I bought it from so the flavor exists. I'm sure the maker isn't sourcing out some unknown flavor that nobody can get...
Anything is possible. For now, back to the drawing board. I'll figure it out and come back and share...maybe

 

[Valanda]

FA does make a black raspberry flavoring, but I cannot find it for sale in bottles less than the 500ml size at ecigexpress. While I do love the flavor, I don't love it THAT much!

 

[Crunktanium]

Skip the Tart skip the Energy drink and use Blueberry Candy with Cranberry.

 

[CreepyLady]

I need BLUE razz too. Found this thread rather useful:
http://www.e-cigarette-forum.com/forum/diy-e-liquid/394881-blue-raspberry-flavoring.html