Having travelled extensively in the Meditteranean region, there are one or two things to understand about their diet. They eat little breakfast, usually only hot chocolate/coffee and maybe a roll, croissant or slice of bread. They tend to have one light meal, and some choose to eat this at lunch time, and one bigger meal.The light meal would probably only be salad or an omlette.The bigger meal would be either fish, or meat with vegetables/salad. Potatoes are not eaten that much but rice and pasta is. The lovely warm climate means that peppers, courgettes/zuchini, aubergines and tomatoes, along with a huge variety of salad vegetables, grow in abundance, and are beautifully sweet. Fruit is also readily available. Many of the Catholic countries have lots of Holy days when meat is not eaten. Also, I think some people would be surprised at the modest size of their meals. Meat is expensive, and eaten fairly sparingly. Fish however is abundant. A typical plate size in these countries is about eight inches and they do not pile them high either. Maybe it's more about portion control than content.