It was fairly clear in the end:
Black cod: 9; Roast chicken: 6; Aubergine soup: 5; Squash soup: 2

Thanks for all the votes.  You were right about the squash soup - it's not quite as nice as the other dishes.  I'll send the recipes for the chicken and the aubergine soup another week.  The squash soup has obligingly resigned.  (Voting has gone pretty well over here in the US of A too.)