hi guys. I have been getting this undesirable sour taste in my overnight oats. Have been taking them for some time on and off and recently got this taste again in 2 consecutive trials. Would like to know it is normal ?? But I have been making them without this sour taste though. What I did was pour in few scoops of raw oats n jus add room temp water, in my mug with a lip covered on top, left at room temp overnight. Advise needed and google failed me so far!