A lovely quirky way to illustrate how far a prized tup has divided opinions.  A tup is a ram, Marmite a strange-tasting dark brown spread that Brits (and others) love or loathe.
‘It turns out my best tup divides opinion like Marmite.’
Source: James Rebanks, The Shepherd’s Life (London: Allen Lane, 2015), p. 166
