Wowzers, not sure who you talked to. 10lbs would be peach juice, seriously. I am sure it would taste good, but it would not taste like beer at all. I am not familiar with "white peaches", but if they are anything like a normal peach, I would tell you to use 5lbs, maybe less. My Peach Wheat
got rave reviews, and I used 5lbs. Using 5lbs the beer needed over two weeks for the peach flavor to mellow out. I plan on making it again this year and I plan on using 4 lbs of peaches.