The plate method: how to build a balanced plate without weighing food

What is the plate method and how is the plate divided?

The plate method is a visual way to put together a balanced meal. You divide a flat plate into three areas and fill each one with a food group. The best-known model is the Healthy Eating Plate from Harvard T.H. Chan School of Public Health, which divides it as follows [1]:

• Half, vegetables, raw or cooked and in a variety of colours. Harvard’s plate also includes fruit here [1].
• One quarter, protein: pulses, fish, poultry, eggs or nuts, with little red meat and avoiding processed meat [1].
• One quarter, carbohydrates, preferably wholegrain, such as rice, pasta, bread, oats or quinoa [1].

Harvard places three more things around the plate [1]. For cooking and dressing, olive oil or other vegetable oils. To drink, water, tea or coffee with little or no sugar . And physical activity every day. One surprising detail is that in this model, potatoes do not count as vegetables [1]. At home, we treat them as part of the quarter for carbohydrates, alongside rice or bread.

What matters is the proportion. A plate with half vegetables is just as filling as one with half pasta, with less energy and more fibre, without you having to go hungry.

How does Harvard’s plate differ from the Mediterranean plate?

Harvard’s plate is designed for the US population. The Mediterranean adaptation we use in consultations keeps the proportions and gives more importance to other foods. It follows the dietary recommendations published in 2022 by the scientific committee of the Spanish Agency for Food Safety and Nutrition (AESAN) [2]:

• Pulses, at least four servings a week [2]. Chickpeas, lentils and beans provide protein and carbohydrates at the same time, so they can fill either of the two quarters .
• Fish, at least three servings a week, especially oily fish [2]
• Meat, no more than three servings a week, preferably poultry and rabbit, and processed meat kept to a minimum [2].
• Eggs, up to four a week [2]. Up to one egg a day can also fit into a healthy dietary pattern.
• Olive oil with main meals, for cooking and dressing [2]
• Fruit for dessert. At least three servings of vegetables and two to three servings of fruit a day are recommended [2]. In our cooking, fruit comes after the meal, and the half of the plate remains entirely for vegetables.

The result is the same balance using Mediterranean foods. Beans stewed with vegetables or ratatouille with egg and bread fit the proportions without forcing anything. It is the kind of food people here have always eaten.

How much goes in each part if I don’t weigh anything?

The method works with a regular flat plate. The American Diabetes Association (ADA) uses a 9-inch plate as a reference, about 23 cm in diameter [3]. At home, an ordinary flat plate usually works, as long as it is not a serving platter. With a plate that size, as a guide :

• The vegetable serving can be generous, because it is the part you can have more of if you are still hungry.
• Protein takes up one quarter, without piling it high: a fillet, a small tin of tuna or a couple of eggs.
• Carbohydrates take up one level quarter: cooked rice or pasta, one medium potato or two slices of bread.

To fine-tune serving sizes without scales, see the hand method for estimating portions. The plate gives you the proportions; your hand, the size of each part.

What balanced dishes can I make for lunch and dinner?

For lunch

• Lentil stew with carrot, pepper and a little rice, with tomato and cucumber salad and an orange for dessert.
• Oven-baked salmon with roasted potato and a tray of courgette, pepper and onion.
• Wholegrain pasta stir-fried with chicken, broccoli and mushrooms, and plain yoghurt for dessert.

For dinner

• Two-egg omelette with a slice of wholegrain bread and courgette soup.
• Grilled hake with green beans and boiled potato
• A complete salad with leafy greens, tomato, cooked chickpeas, tuna, olive oil and a piece of bread.

The proportions are the same at dinner. What usually changes is your appetite. If you are less hungry, reduce the quarter of carbohydrates before reducing the vegetables. If the dish is a one-pot meal, such as a stew or salad, think about the proportions within the dish. Make sure the vegetables are visible and that there is some protein.

To plan a whole week of meals like these, see the weekly menu for planning healthy lunches and dinners.

Does the plate method help with weight loss?

Yes, as a tool within a plan . Giving half the plate to vegetables means the meal takes up the same space with less energy. Protein at each meal helps you feel less hungry by the next one. And because there is nothing to count, it is easy to stick with, which is what determines whether the weight lost stays off.

The plate method does not determine how much energy is right for you. If your goal is to lose fat, it fits into the plan we explain in our guide to a weight-loss diet without regaining the weight. That guide covers a moderate calorie deficit, enough protein, strength training and lasting habits.

How to adapt it for diabetes, sport and children

If you have diabetes

The ADA standards describe it for type 1 and type 2 diabetes [3]. It is a common visual way to plan meals [3]. The proportions are the same, with half the plate for non-starchy vegetables, one quarter for protein and one quarter for carbohydrates [3]. In a randomised trial, both the plate method and carbohydrate counting improved glycated haemoglobin (HbA1c) [3]. This is the test that reflects blood glucose over the past few months.

The plate method on its own is not suitable if you use insulin or medicines that can lower your blood sugar too much. Talk to your doctor before changing the proportions. The amount of carbohydrates in each meal and the dose go hand in hand.

If you train

The proportion of carbohydrates is the one that varies most with training. Sports nutrition recommendations adjust carbohydrates to the day’s workload [4]. With around an hour of moderate exercise a day, 5 to 7 g per kilogram of body weight. With programmes lasting one to three hours a day, 6 to 10 g per kilogram [4]. On the plate, carbohydrates take up more space on long training days and vegetables a little less. On rest days, go back to the usual proportions.

If you cook for children

Harvard has a children’s version of the plate [5]. Half is vegetables and fruit, and the other half is whole grains and protein. Water is the drink, and at least one hour of activity a day is added [5]. The plate and serving sizes change according to the child’s age and appetite. In childhood, the plate is for offering variety, not for restricting food. If you are concerned about their weight, discuss it with their paediatrician.

What mistakes do we see in consultations with the plate method?

These are the snags we hear about most often during the first few weeks of using the plate.

• Serving food on a platter, which keeps the proportions but doubles the amount
• Leaving vegetables as decoration: two lettuce leaves are not half a plate
• Forgetting what goes outside the plate, such as bread, drinks and dessert.
• Using it at lunch and then standing up to eat whatever is left in the fridge for dinner.