I find the amount of foam that this product generates acceptable. It's not as much as an egg white or some high quality aqua faba, sure, but it's so easy to add a few drops. That said, I can pick up a distinct flavor from it- sweet, artificial: likely the propylene glycol. This comes through in most cocktails I've used it in, and I've found that it requires powerful flavors to sufficiently cover it up. It's alright in a New York Sour, but I wouldn't recommend it for anything more subtle.