You might be thinking "darn, I have to travel so far for tuff, it's my favorite block but my world is soooo old."
Andesite, granite, and even diorite has a recipe, so why can't you renew the best block in the game?
No worries, I've got your back!
Using a Blast Furnace, you can smelt andesite into tuff!
As with my calcite datapack, the method of acquiring tuff can be found under the "images" in case you forget.