I feed "mash" or ground feed from the mill. First, a dish feeder, like those rubber bowls works well. I take a 2 quart scoop of mash in a feed bucket and dampen it with warm water. Stir and leave sit for 5 minutes. The mash becomes like oatmeal or porridge and I stir bit more before feeding. There is very little waste if you don't over feed more than they can eat in a reasonable period of time. The mash becomes more like crumbles in appearance. If there is left over gravy, or juice from the crock pot or similar? 'Tis a grand thing for the birds.
The quality of the fresh ground feed is motivation for me. The price is 40% less than pre-bagged, trucked in feed. Another motivation.
So fussing a bit with making the mash is not bother for me, as I am retired. It is what fanciers fed their birds for decades before pelletizers were invented. May not be everyone's cup of tea.