Although it was the second time Zhang Yanhang was using the Crimson Iron Ant Queen Hormone Essence, he still thought the Alchemist's control over taste was really impressive; it was just a shame that after his promotion to Second Tier, he had already acquired the ability to fast, otherwise, he would certainly have delved into studying this technique.
When Zhang Yanhang was in Raccoon City and couldn't find edible food, he had the idea of using alchemy to transform soil into regular food.
While this idea might seem outlandish to the average person, it was indeed possible to do with ease through alchemy, provided one researched the technique a bit.
After all, if the Haitians could turn soil into their staple by making mud cookies (commonly known as Guanyin Soil), then it was completely reasonable for Zhang Yanhang to transform soil into food using alchemy.