I add 1/4tsp vitamin- electrolyte blend from the feed store to a 10 lb batch. About 3% of soy protein isolate powder. 5 capsules of branched-chain amino acid tablets. Those are from the health food store.
I add just enough water for it to clump. Pack it into the ?12 oz. cheap gladware rectangles. Placed over the inner cover, the bees cannot invade the upper box. Their natural moisture is captured, condensing on, and softening the sugar.
They clean them up very well. The small amount of protein and amino acids replaces some pollens.
My bees like them.