So about a half kilogram of oats and raisins with oil and various additives? I guess it's slightly more palatable than Soylent but eating it seems just incredibly grueling.
I think thats the point. He specifies that "excessive chewing activates digestion" or something on the github page. Its designed to be a real jaw grinder.
I cannot comment on the nutritional quality, but the way the ingredients are written down irritated me, e.g. "parsleydried" instead of "dried parsley". It makes it seem more like crafting instructions for Minecraft than a real-world recipe.