The ingredients contain various hormones that contribute to growth, as well as added nutrients. I have seen an increase in yields and get more flushes out of my cakes. I live in a small town so some of the ingredients I can't find around here so I order them in large quantities online, I think I spent about $80 dollars last time I ordered not including vermiculite and brown rice but that gives me enough ingredients to make cakes for a year or more. And I am constantly making cakes, I don't have an adequate source of poo around here so I don't do a whole lot of bulk, I typically average about 10 dry grams a cake so for me it works. I buy vermiculite in 4 cubic foot bags, and have quit using perlite cause it is messy and just another added expense. I set up a small greenhouse with a Kaz coolmist hooked up to it which will hold about 70 cakes. I know it's more work but for some reason I have issues with grains at times and the lack of access to bulk supplies keeps me doing cakes. Cakes are great for making liquid culture syringes too, when i'm ready to birth a cake I shoot sterile water into the jar and shake it up real good an suck it back up in a syringe and use it to inoculate more jars. Oh and by the way this is not my recipe, it was taught to me by an old friend.
One of the most wonderful things about mushrooms is their adaptability - oh not necessarily their adaptability to fruiting, that can be very exacting - I am experimenting with Boletus Edulus (sp?), no one knows what triggers fruiting but the mycelium will grow well even on cardboard. Now that is the point. Mushrooms have an ability to conform their digestion and enziomatic approaches to breaking down any number of substances. In fact one of the primary factors in sencience (the final degradation and weakening of mycelium) is a constant and unchanging diet - eventually the mycelium will lose the ability to cross substrates if it is fed the same thing and is never challenged by new nutrients. Now this is the point, the odds of your actually giving your mushrooms enzimes or hormones that the mushroom doesn't already produce are slim. If indeed you ARE doing this, it is as though you are sitting your mushroom down on the couch and forcing it to watch TV 24 hours a day. Now I don't know about all of those ingredients but I know a few - some provide extra sugar, some provide extra protein. I know about plant hormones (see my grow journal - oh, and I have decided not to post anything new until I see ROOTS), but mushrooms are more animal than plant. They breath oxygen, they have a distinct communication (nervous) system, in fact there is a new classification that includes mushrooms as well as animals.
Owing to that, it is a mistake to presume that mushrooms are plants and it is a mistake to presume that they act as plants or are stimulated as plants. You include a number of grains, including soy and or cotton seed. These are high nutrient substrates, if one were to wish to increase the yeild of pasteurized straw one might amend the colonized straw with either of these and, make allowences for the extra heat produced. Other than that, I really can't see a lot of advantage and a whole lot of disadvantage of using this method. Do what you wish, of course, but I would encourage you to work with the growing cycle. This includes, as I have often said, orchestrating pin sets and letting the mushroom work in the way it evolved to work. Experiencing the joy of accomplishment in seeing a canopy of caps. Learning to use grains is a first step.
I forage fairly regularly because I believe that the mushrooms that grow in my area are most likely to be able to adapt themselves to my climate, my elevation and my temperature ranges - I recently found a nearly luminescent, translucent shaggy mane. I managed to isolate a clone of this from the wild - I did not unpack my hood, I did not unpack my liquid culture system but went old school - triangles of agar dropped into jars of grain. They are growing nicely - I am no magician, my culture teqniques are no better than yours. If I can do it, you can as well.
Now I no longer grow the sorts of mushrooms other do here, I have no need and they present no challenges to me, I would rather find something new but I remember the years of enchantment I felt when I did grow those sorts and I would never have gotten to this point if i had not, those sorts of mushrooms are powerful incentives. the story of the black morel is my inspiration. A man who had for years only grown your mushrooms decided to try to grow morels - they are very elusive and their life cycle is very strange, but he happened across a method, a simple solution to a very complex problem, he unlocked the secret and patented it.
don't do it the only thing good is the sex lol.