The three grand companies have different operating procedures, so much that after setting camp in Castrum Oriens, they had initially a hard time working together. In particular, Gridanian soldiers were in charge of the rations, and while they are nothing but hospitable, the vegetarian meal they served were considered monotonous by the Storms and the Flames.

And I think that's the moment when I decided Stormblood sidequests are amazing.

There's an NPC at the Canopy complaining about Gridanian food being bland too, though apparently Mother Miounne makes great desserts.