Quote Originally Posted by Amineri View Post
Apparently the development team is in favor of a more flexible system like this.

The new/updated recipes in 1.19 will feature this system. Not all of the 1~>1 recipes are shown in the new recipe section, as many of them are the updated versions of the old recipe.

Following your example, there is an updated recipe that is (1 Dodo skin + 1 Alumen ) ~> 1 Dodo Leather.
Where did you find this information? There was a ton to read through so its entirely possible I overlooked it but I did not see it indicated anywhere.