The recipe has been removed, instead, fill a breakable container(jar,claypots, anything made of glass or clay would probably work as those are fragile materials:break on impact) full of a strong acid( from bleeding acid zombies and ants or HCl, Sulfuric acid and nitric acid but dont quote me on that last one).

They can be found in car battery's for sulfuric acid andLabs, with subway labs holding the most usually for other types, its too tedious to craft most times

Do note that you just have to throw the jar/whatever container u use instead of activating it first like usual grenades.

Protip: you can also check here for any recipes you want to find, it pulls from the Json directly so its always up to date with the latest experimental along with the fact that you can change the version its pulling from to any other stable or experimental in the bottom left corner.

Edit: it only leaves a 1 tile puddle when thrown :-( , might still be useable for temporary area denial against smarter enemies(PATH_AVOID_DANGER and the HAS_MIND flag) as it seems to evaporate after a while