Found the Mushroom Farm skill, and I already had a Pan, so I experimented with this. It dumps a lot of poison very quickly (25/s).
Be aware that Poison Ivy hard counters this. It also does not have as much heal as I would like from a food build. If you're lucky you might get a Cheese.
Cursed Dagger isn't really necessary. The weapons contribute very little damage compared to the poison. If I get the Mushroom Farm skill gain, I may try the Snake or the Cauldron.