Portion sizes have expanded dramatically over the past 30 years — restaurant servings, packaged food portions, and even the plates we eat from have all increased substantially. Research published by the British Heart Foundation found that the average UK portion size for many common foods is now 50–100% larger than it was in the 1990s. Understanding what appropriate portions actually look like — and having practical, non-weighing-based tools for estimating them — provides a useful calibration for daily eating.
The Hand Portion Guide
The most practical portioning tool is your own hand — it scales with body size and is always available. Protein (meat, fish, tofu): One palm-sized, thickness-matched portion per meal — approximately 85–100g cooked. This provides 25–35g of protein for most adults. Cooked carbohydrates (rice, pasta, grains): One cupped handful per meal — approximately 150–200g cooked (equivalent to 50–70g dry weight). Vegetables and salad: Two cupped handfuls or a generous plate-covering amount — there is no upper limit for non-starchy vegetables. Eat as much as you like. Cooking fats (olive oil, butter): One thumbnail per portion — approximately 5–10ml. Nuts and seeds: One closed handful — approximately 30g, the portion size consistently associated with cardiovascular benefits in research. Nut butters: One thumb-sized amount — approximately one tablespoon. The NHS visual portion guides provide similar hand-based reference points for common UK foods.
Common Foods and Their Appropriate Portions
Pasta: A portion of dry pasta is 75g (a ball the size of a closed fist before cooking). Most restaurant servings are 150–200g dry — double the appropriate portion. Rice: 75g dry (a cupped handful) is one portion, producing approximately 200g cooked. Bread: Two medium slices constitute one carbohydrate portion. Cheese: A matchbox-sized piece (30g) is one portion — providing about 7–8g protein and 9–10g fat. Most restaurant cheese boards provide 60–90g per person. Steak and meat: A palm-sized portion (100–120g cooked) is appropriate — most restaurant steaks are 220–350g. Cereal: The average person pours 50% more than the labelled portion. Checking the labelled weight and using a kitchen scale occasionally for calibration is revealing. The British Dietetic Association portion size food fact sheets provide comprehensive reference values.
Why Portions Drift
Portions consistently expand through several mechanisms: using larger plates and bowls (people fill whatever container is available); serving from large packages (the larger the package, the larger the pour); eating while distracted (reducing awareness of how much is consumed); and habituation to restaurant-sized portions as a "normal" reference point. The gradual normalisation of larger portions means that appropriate portion sizes can feel uncomfortably small to people accustomed to larger servings — a recalibration period is normal. The British Nutrition Foundation portion distortion research documents how far UK perceptions of "normal" portions have drifted from appropriate ones.
Practical Recalibration
Rather than permanent calorie or gram tracking, a useful exercise is to weigh portions for one week to calibrate visual estimates, then revert to visual portions thereafter. This recalibration, repeated every few months, catches the natural drift toward larger portions before it becomes entrenched. Use smaller plates for main courses (a 25cm plate rather than 30cm produces naturally smaller portions). Serve food from the kitchen rather than putting serving dishes on the table — serving from a distance reduces second helpings. Eat slowly — it takes 15–20 minutes for satiety hormones to register fullness, and eating quickly consistently leads to overconsumption before the signal arrives.
Fresh Healthy Food Delivered to Your London Office
Making consistently healthy food choices is much easier when quality food is delivered directly to you. Vanda's Kitchen near St Paul's EC4 brings certified halal, 100% nut-free, freshly prepared lunches to City of London offices — built around exactly the healthy food choice principles covered in this article. View our team lunch options or WhatsApp us about delivery to your office.
For more guidance, see our healthy plate guide and the NHS Eat Well resources.
Fresh Healthy Food for London Offices
Vanda's Kitchen near St Paul's EC4 delivers certified halal, 100% nut-free, freshly prepared lunches to City offices — built around the whole food, balanced nutrition principles covered here. Full allergen labelling, Selfridges Food Hall quality. View our team lunch options or WhatsApp us.
Fresh Healthy Food for London Offices
Vanda's Kitchen near St Paul's EC4 delivers certified halal, 100% nut-free, freshly prepared lunches to City offices — built around the whole food, balanced nutrition principles covered here. Full allergen labelling, Selfridges Food Hall quality. View our team lunch options or WhatsApp us.
Fresh Healthy Food for London Offices
Vanda's Kitchen near St Paul's EC4 delivers certified halal, 100% nut-free, freshly prepared lunches to City offices — built around the whole food, balanced nutrition principles covered here. Full allergen labelling, Selfridges Food Hall quality. View our team lunch options or WhatsApp us.