The aim of a good rosacea diet is to lessen food consumption. In that way, you can help in reducing the calories or the heat burned and that results in reducing your body temperature. Thus, in winter, your body is colder and in summer, it remains less hot. As you produce less heat with the burning of calories, dilation or the redness on your face is also less. Therefore, a proper diet for rosacea should include three small meals. Consider breakfast as the most important. If you like snacking in between meals then you can go ahead as it helps in limiting flushing caused due to vascular dilation.