Hi Adam,
I always have trouble with this puzzle whenever I replay the game, and it's always down to mixing up similarly coloured spices.
The "brown" - the coriander and the ginger.
The "green" - the peppermint and the all-spice.
So re-double-check those ones first of all. Keep track of exactly where you are on each level, it's really easy to get turned around without realising it.