19ac WI canteen's openingwith a bit of meat and veg (9 letters ----b-e-n)
16d Period that's black as ink? Maybe not (8 letters e-a-a--)
FYI 15 across is Scafell Pike and that is where the e comes from. Goon outside restaurant starts to laugh loudly, a high point. That is Spike with a cafe and two Ls