The rough part of making your favorite meals in New World are the limited and hard to find ingredients. Yeast is just ONE hard to find resource!
Currently Yeast can be found in Monarch’s Bluffs, Brightwood, and Shattered Mountain. There’s a catch though: You still have to grind Provision crates which have a chance to spawn your needed ingredient.
Provision crates will respawn around the 45 minute mark after you have opened them.
Monarch’s Bluffs Provision Locations (level 1-25)
Monarch’s Bluffs is THE spot for your Yeast provision crates! Low level enemies and many crates to choose from make this place your new best friend.
Brightwood Provision Locations (Level 26-35)
Brightwood still has a decent amount of crates to choose from and they are mostly condensed on the Southern end.
Shattered Mountain Provision Locations (Level 60+)
Shattered Mountain has a decent amount of crates to up your chances of scoring some Yeast.
All information gathered was from personal gameplay and from https://www.newworld-map.com with permission.