I flew with Iberia and booked a diabetic meal. Tried to cancel as I heard they were terrible and reading the spec, described as low sugar, low fat. So on the way out, I received a dish of white rice???? with a slab of white fish and a couple of bits of roasted pepper. Dire. On the way back, one of the light meals included a gluten free roll, similar to a cannonball. Luckily I took a couple of packs of long life low carb bread (carbzone, 5 thin slices of rye like bread in vacuum pack) with which i made up sandwiches with butter and cheese)