To solve this you need clue cards N and O. If you do not have all these items yet, find another puzzle to solve.

Match the numbers on clue card N to the numbers on clue card O. 16 = S, 13 = AL ...

The lunch order reads "salmon on buns with pate". Notice how some of the dashed lines are bolder than the others? Taking just those letters give "lobe". Type the answer in the box above to proceed.