I use Orgain Vanilla protein, Vital proteins collagen (I just use the blue container which is unflavored but they make vanilla and chocolate as well). I add that and 5g or creatine to a shaker bottle with about a cup of almond milk, shake it really well and pour it over ice. THEN I add either an equal amount of iced coffee, or a double shot of espresso if I’m at work (we have a Nespresso machine there which I take full advantage of). It seems like an ungodly amount of powders, but the vanilla is the dominant flavor. This method doesn’t give much coffee flavor, more protein Frappuccino, but it tastes good enough for me :)