8 foods you absolutely must weigh!

Beth Furness - Assistant Nutritionist | 02 Jan, 2022

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If your goal is weight loss, learning about portion sizes is key. Make your kitchen scales your best friend until you get a 'picture' in your head of what a serving looks like. But even when you think you've got it sussed, there are still some foods that catch us out – with big consequences! If you do nothing else, make sure you ALWAYS weigh these 8 foods – or you may unwittingly be eating hundreds more calories than you thought.


1 Oil



A tablespoon has a whopping 123 calories. Drizzling straight into the pan often leads to a huge overuse (we're looking at you Jamie O!).

the hateful eight

2 Nuts



While certainly healthy, thanks to their level of good fats, nuts are very high in calories. Grabbing a handful can be up to 232 calories, so be sure to always weigh – 30g is a portion.

the hateful eight

Maria lost 13st182lbs83kg with the Nutracheck Calorie Counter App

Maria before and after

"Since losing this weight, my confidence has improved and I don't hesitate to go anywhere; before I was so afraid of being judged because of my size."


3 Mayonnaise



Full-fat versions have an impressive 100 calories per 15g serving, but a generous spoonful from the jar is likely to be more, so a measuring spoon is strongly advised.

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4 Cheese



It's incredibly easy to cut a hefty chunk of cheddar and eat it without realising. At 125 calories for a small 30g matchbox sized piece, it's essential to weigh. Grating cheese makes it go further.

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5 Nut butters



Crunchy versions are extremely difficult to spread thinly. Smooth butters are easier, but don't assume it's only a 'thin' scraping. At almost 100 calories per 15g serving it's important to know exactly how much you've used.

the hateful eight

6 Cereal



A 30-40g serving is the recommended portion for most cereals. We did an experiment that found most people pour almost double this. Always weigh your cereals, we're certain you'll be shocked!

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7 Butter



It's essentially 100% fat, so understandably, it's high in calories. A little 7g butter pack contains a generous 52 calories – and butter straight from the fridge is impossible to spread thinly. Always weigh your serving and stay in the know.

the hateful eight

8 Jacket potato



Your visual idea of what a 'medium' potato is, is probably somewhat bigger than the 213g definition of 'medium'. Always weigh your potatoes before cooking and record the weight for accuracy.

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Nutritionist Beth Furness (ANutr), holding a BSc in Nutrition and Health, is deeply dedicated to applying evidence-based knowledge to all aspects of nutrition. Her passion lies in fostering healthy relationships with food, ensuring that everyone maintains a balanced and sustainable approach to nutrition.

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