Taste of formula?

Lauren
Anyone else had a baby that just didn't like the taste of formula? My baby has been ebf since birth, but her doctor wants us to supplement after feeding because she isn't gaining well. I'm OK with the idea, but she really just doesn't like the taste, so I'm trying to give expressed milk that I have, but, of course I need that for when I'm at work. We've tried similac for supplenting, enfamil infant and gentle ease. I've also mixed some formula and bm together, but she still doesn't like it! Which one tastes the best/most like breast milk? Haha silly question probably. Thanks, ladies.