Well done Kevin! So Mrs Walters is the Plant Manger is she? - what do they plant in her and feed it to? Cress I hope. Of course it's a very catchy tune (and more consistent than Kippers.
PS if you're not vegetarian, Bovril makes a nourishing drink when dissolved in water too, but I've never tried it with cress.
PPS I have a dim recollection of reading Peter Ustinov's autobiography and reading that when his family came to England they thought they'd arrived in Bovril because they confused a poster hoarding with the station signs. Or did I dream that?