Ah, so that's why. I was wondering why the churn didn't "open" like any other container would. Presumably, the mead barrels in the cellar are also flora.
Stupid design choice. Should have done both the butter churn and the mead barrels just like they did the milk cupboard: a proper container scripted to spawn 1 butter and 1 mead every 24 hours.
I'd be swimming in mead if they did! LOL I had some empty spots that were seriously annoying me where I didn't like some furniture pieces, so to 'fill in the blanks', I got some of those big cooking kettles and placed them where I wanted, and filled them with mead, ale, different wines, etc. Looks good and you can grab a drink almost everywhere in my house. I thought about the cellar, then decided to build the mead barrels. I like them!
I think the devs should have thought just a bit more on the whole cow, milk, butter thing though.