I make large amounts of Horchata concentrate for our restaurant and would like to find a better and quicker way to grind my rice. The last batch I made, I used 72 cups of rice. My blender is not giviing me a good grind and can't handle all that rice. Does anyone have any advice as to what would work well for grinding these large amonts of rice. I would like to get a very fine ground rice. I would also like to grind cinnamon sticks and dry peppers. I hear that coffee grinders may be good, has anyone actually used them for rice. I appreciate any helpful advice.