Only clenched fists command power!
Therefore, Gary Smith took a different approach and chose the kind of Delicious Food that best suited the taste of Void Series Pet Beasts, which wasn't high-end and didn't have a high nutritional content.
The advantage lay in its cost-effectiveness; one could even call it junk food, but...
It's delicious!
It matches the preferences of most Void series Pet Beasts!
Even Little Spider, who only eats watermelon, would be willing to pair it with something, which shows how good the taste is.
However, Gary Smith rarely let it eat such foods, as children should not consume too much junk food.
As for mass production, that was just a pretense. Seriously, materials from the Void are notoriously expensive. Even if you managed to reduce costs, a single piece of candy would still cost hundreds of thousands of Money, and it wouldn't have much effect on getting stronger.
Apart from Rich Peasants with money to burn, who would buy such a thing?