Last May I was planning on brewing two beers: a California Common and a Scottish 80/. I had crushed the grains in anticipation of brew day when I had to rush my pregnant wife to the hospital to give birth two months early (!). Brewing plans were scrapped for about eight months. Baby is healthy and happy (and keeps reaching out for my beer when I have one in hand), but the grains from that May brew day have been sitting in my brew storage place in the basement for nearly 10 months. Even though I've made other beers since May, I haven't brought myself to chuck the old grain. If I mashed the grain now, how nasty would the beer be? Is there any way to mask the taste of stale grain?