I was having intermittent problems with maintaining a good circulation in my RIMS mash. I assumed it was a starch or protein problem, not realizing it was a beta glucan problem. I have brewed 3 times using just a 1/4 teaspoon with 12 pounds of grain or so. It makes an incredible difference. I only have to stir the mash once in the beginning, after that the flow through the grain bed remains very high. Not only does it improve flow, but my mash extraction rate went from an already high of 85% to an amazing +95%. On top of all that, the mash tun and hoses are easier to clean, leaving almost no slimy coating on the false bottom. An outstanding product for system that recirculate during the mash.