Ok, so I'm pretty new to the all grain business and have been getting some pretty low numbers while batch sparging (efficiency and missing gravity points) I've been looking for the amount of time I should stir the mash when I first add the strike water to the grains. Most of the time I read people just say to stir really well but I'm wondering if it's like 1 minute, 30 seconds, or even 2-5 minutes? I usually stir for probably 30 seconds to ensure all the grain is wet and not sticking together. Also how vigorously should I stir? Thanks