Is your idea related to a problem? Please describe.

Describe the solution you'd like
This seems like a great way to make a nice block from Oh The Biomes You'll Go renewable: casting magma cream into a cobblestone block in a casting basin turns it into magmatic stone.

Describe alternatives you've considered
Create may also be able to handle this by compacting magma cream into cobblestone, though Tinker's Construct has a much better way of facilitating it.

Additional context

Versions:

• Minecraft: 1.16.5
• Forge: 36.1.4
• Mantle: 1.6.88
• Tinkers Construct: 3.0.2.84

Confirm below that this enhancement is not covered on the roadmap or "Whats New?"
This seems obscure enough to not have a mention elsewhere!

I have no plans to make a block from another mod renewable. They are free to add the recipe themselves, but there is too high of a risk of messing with mod balance if we start adding random recipes for other mods blocks.

You are free to add this with a datapack yourself.

Fair enough, it is probably better done on their end, I've made an issue on their tracker for it.
I have already made a data pack for this as well, but would much rather see native support for such interactions.