It features foods eaten in Greece, Spain, southern Italy and France, and other countries that border the Mediterranean Sea. The Mediterranean diet emphasizes eating foods like fish, fruits, vegetables, beans, high-fiber breads and whole grains, nuts, and olive oil.Meat, cheese, and sweets are very limited. The recommended foods are rich with monounsaturated fats, fiber, and omega-3 fatty acids.t features foods eaten in Greece, Spain, southern Italy and France, and other countries that border the Mediterranean Sea. The Mediterranean diet emphasizes eating foods like fish, fruits, vegetables, beans, high-fiber breads and whole grains, nuts, and olive oil.