The dicky, or co-pilot, was not qualified for such vital duties nor even that of crew sustenance . There was yet another specialist for that important work, the AQM (later ALM) who had a galley behind the signaller (as Warmtoast and ancientaviator correctly state).
Unless, of course, you were the OH's father, who was a Nav on 201 Sunderlands in WW2 ... he managed (briefly) to escape from a Reserved Occupation, and was (by family anecdote) a very good Commissioned Chef
Sadly, from his POV, he was dragged back to his civilian profession as a Civil Engineer to assist with reconstruction efforts. Although he was invited to the 'unveiliing' of NS-Z at Hendon as a former crew member/chef
