Review of Natural Buttercream (Vanilla)-WF:

I was shocked this was good, but I damn near lost my mind when this became my favorite frosting behind VTA.   I am a frosting fanatic, and this one blows everything else out of the water - including Flavorah.  

Primary Notes: A rich, creamy, and smooth buttercream with a distinct vanilla-forward presence.
Secondary Notes: Hints of sweet dairy, slight powdered sugar, and a light whipped butter texture.
Sweetness: Moderate to high (inherently sweet, no need for additional sweeteners in most cases).
Mouthfeel: Full-bodied, smooth, and creamy—adds depth and richness to mixes.
 Recommended % for Mixing
Standalone: 3-5% (Rich enough on its own but best with support).
Mixing (Accent Note): 1-3% (Adds creaminess & vanilla depth without overpowering).
I don't see this being effective as an additive unless you're trying to boost a different frosting or cake - but 0.75% - 1% is as low as I'd go.