Mash is great. In my opinion feeding mash along with whole or freshly cracked grains is the old way that worked since man domesticated chickens. Commercially formulated bags of feed have only been around a relatively short amount of time
Personally, I am trying to relearn what we have forgotten since the boom of "factory food" after WWII.
When attempting a whole grain diet, mash is a great way to get your chickens what they are missing, and use up excess fruits and vegetables.
For me things like apples, pumpkins and winter squash are great bases for mash. They are abundant in fall and store well all winter.
I will cook and mash the fruit or squash, to that I add what ever you feel they need. My current experimental "Protein boost" mash is two quarts alfalfa meal, two quarts organic soy meal, 1 quart fish meal, 1 cup black jack molasses's, 3 T Azomite. (28% protein)
I will add a cup or so of this mix to the mashed up fruit or squash. Serve this once a day.
A pro-biotic mash with yogurt as a base is another great mash.
I too would be interested in seeing some more idea's and recipes.
(For the record my birds still have free choice organic commercial feed available at all times, at least until I can understand chicken nutrition well enough to eliminate it!)
ON