So…
I want a tag for fluids that are blacklisted to go into a blaze burner. Useful for lots of things, but:
Create: enchantment industry adds blaze (burner) enchanters, which accept fluid XP.
The problem is that when removing the enchanting guide, making it a blaze burner again the XP goes into the blaze burner, voiding it.
The blacklist fluid tag would be used by the enchantment mod to blacklist xp.

Btw, by tag I mean data pack liquidburner:tags/fluid/blacklist.json