FOOD = { icecream, banana, chocolatecake, lasagna, 
          steak, rice, chips, brocolli, beans} ;

dd = [| icecream,      1200,  50,  10, 120,  400     % icecream
      | banana,         800, 120,   5,  20,  120     % banana
      | chocolatecake, 2500, 400,  20, 100,  600     % chocolate cake
      | lasagna,       3000, 200, 100, 250,  450     % lasagna
      | steak,         1800, 800,  50, 100, 1200     % steak
      | rice,          1200,  50,   5,  20,  100     % rice
      | chips,         2000,  50, 200, 200,  250     % chips
      | brocolli,       700, 100,  10,  10,  125     % brocolli
      | beans,         1900, 250,  60,  90,  150 |]; % beans

min_energy = 3300;
min_protein = 500;
max_salt = 180;
max_fat = 320;
desserts = { icecream, banana, chocolatecake };
mains = { lasagna, steak, rice };
sides = { chips, brocolli, beans };