If the core uses of Demon Beast Materials included refining Elixirs with their Essence Blood and Demon Cores, and crafting Artifacts with their Skin, Armor, and Scale Claws, then another major use was undoubtedly cooking Demon Beast Meat into Spiritual Food.
Since Demon Beast Meat was used, what happened to the Demon Blood?
Moreover, this was a Tier Two Spirit Chef. Surely he wouldn't stoop to cooking Tier One Spiritual Food, right? Wouldn't that be a waste of his talents?
And if he cooked Tier Two Spiritual Food, he would need Tier Two Demon Beast Meat...
Following this line of reasoning, perhaps this Mr. Zeng had—or knew of—a channel for Tier Two Demon Beast Essence Blood.
And for Tier Two Demon Beast Essence Blood, there was an extremely small chance of it being of the Mortal Filth grade. It would be at least Muddy Evil, and more likely, Profound Spirit.
...
Soon, the two arrived at Chef Zeng's "Chuixue Pavilion."
