mostly a neutral flavor. you shan't care about it much if you're really into it. So long as her diet isn't wholly meat and beans (aka protein) and her hygiene is good, and she trims/shaves (the ONLY bad tasting/smelling woman I've been with had bush like nobody's business) you'll be fine.
On the reverse, you ought to consider how nice is YOUR diet, YOUR hygiene, and do YOU trim? It's not like girls like to floss with your hair either...and too much protein makes men taste bitter.
Fruits/Veggies = good for all sides, and everyone wins!