Weirdly enough Steve Bannon was part of this. https://www.vice.com/en/article/qkjn87/the-strange-history-of-steve-bannon-and-the-biosphere-2-experiment

It's not a great as the article seems to think, it's around 500 secs from hydrolox according to Scott Manley. A few pictures I've seen make it look like an aerospike which makes sense with an annular combustion chamber, so may well be good for a first stage or an SSTO. Another concept I've seen recently is a sort of nuclear thermal/ion hybrid with an ISP of a few thousand whilst generating serious thrust, this makes more sense for deep space.

Under the 'lifestyle' section of the wiki article it says 'her diet consisted of dry cat food supplemented with broccoli, eggs, turkey bacon, coffee with cream, and—every two days—"an eyedropper full of red wine".'