Heavy Duty Grain Bag Bulk SackThis bulk sack Grain Bag for adding malt when brewing beer makes loading grain into the Mash Colander a snap. Place the empty bag on a pallet and push it under the grain mill (see this link for instructions on building your own grain mill for instructions on building your own grain mill). The bag has a spouted top which can tie around the mill chute to minimize dust. When all the grain is milled, connect the bag to the overhead hoist and raise over