Cardassian food hot takes:

They don't use table salt, they use something akin to Garum (a sort of thin sauce made from fish used across the Roman empire)

Kanar is made of flowers and the colors are distinguished by wether or not berries were added (clearer blue is flowers only, the murkier brown and mauve colors have berries)

Cardassians, while capable of consuming grains and plants in general, still tend carnivorous and a lot of their cuisine reflects this. If one wanted to try and analyze regional Cardassian cultures based on the "wheat vs rice culture" system, they'd actually have to do it on a fishing vs pastoral system or something similar.

As a corollary to the previous, Cardassia subsidizes some basic food stuffs to make them more broadly affordable to those of any class, to prevent civil unrest. A lot of this is things like eggs or fish.