Oh, that one! The common name is Mezoo.
https://www.lucasgreenhouses.c...
Baby Sunrose (Mesembryanthemum cordifolium 'Variegata')
I have a hard time keeping it really nice over the Winter. It would not survive our Winter outside.
For several years I have tried pieces in all sorts of conditions in the greenhouse and usually I manage to keep one plant alive. It is a Mesemb, native to South Africa. Last Winter I kept a piece in the garage, which goes down to ca 40 degr F, it didn't survive.