Hi All - I usually have very good attenuation with my beers (regardless of the stated attenuation of the yeast strain I am using), which I normally think of as a very good thing. But I would like to brew a barleywine and end with a higher FG. I plan to use White Labs 002 (attentuation 63-70%). But I really want to have control over the FG and not just cross my fingers and hope the yeast don't go too far. Is there any way to manually stop the yeast once I've hit my desired gravity, without affecting flavor?