Review of Custard Flavor-INW:

Very nice flan/creme brûlée custard without the burnt sugar crust or any citrus, but with a touch of cookie/biscuit and some light vanilla. Straight-forward, light, and so far it's been easy to mix with. 

I used this at 2%, and it took on a slightly chemical taste at higher percentages. Looking forward to seeing how it tastes with a longer steep.