Where do i get this item? Spoiler Ahead

[dense shard]

I tried to put it in the cheese machine but it didn't work... Where do i put it to get the cheese wheel

[red crown]

Large buffalo milk in the cheese machine?

[dense shard]

yea i got it! thanks

[arctic rivet]

Large Mermoo Milk in the Cheese Machine

[red crown]

Oh! Haven’t gotten the ocean animals yet

[arctic rivet]

Probably because they unlock via the altars and most focus is on the underwater crops.
They are all adorable and profitable. Biiiiiiiig ranch house though.

[red crown]

Yeah I’m working on the altars now

[arctic rivet]

Looks like you're at the third or fourth altar, I think Mermoo unlocks after the first or second.

[lucid stump]

Mermoo unlocks after the second altar.