The Pack Weight Illusion
It's natural to grab two packets of biscuits and compare them based on the total weight and price. A 250g pack for ₹50 seems like a better deal than a 200g pack for the same price. This is the 'cost per gram' logic we've all been taught. However, this
simple comparison can be misleading. Food manufacturers often use pack size and front-of-pack claims to their advantage, making a product appear more economical or healthier than it truly is. The real story isn't in the total weight, but in the details of the nutrition label, specifically the serving size.
Serving Size vs. Portion Size
Before we go further, it's crucial to understand the difference between two often-confused terms: 'serving size' and 'portion size'. A serving size is a standardised, measured amount of food determined by manufacturers and listed on the Nutrition Facts label. It's the basis for all the nutritional data like calories, fat, and sugar. A portion size, on the other hand, is the amount of food you actually choose to eat in one sitting, which might be more or less than the recommended serving size. For instance, the serving size for a bag of chips might be 15 chips, but your portion might be half the bag. The disconnect between these two is where we often consume far more calories, sugar, and salt than we realise.
The True Cost: Price Per Serving
A more insightful way to compare products is by calculating the 'cost per serving'. To do this, simply divide the total price of the package by the number of servings listed on the nutrition label. Let's take an example. A large box of breakfast cereal might cost ₹300 and contain 10 servings. The cost per serving is ₹30. A smaller, seemingly cheaper box might cost ₹200 but only contain 5 servings, making its cost per serving ₹40. The larger box is the more economical choice on a per-serving basis, a fact you'd miss by only looking at the shelf price.
A More Accurate Nutritional Snapshot
Comparing by serving size is not just about saving money; it's fundamental for making healthier choices. All the values on the nutrition label—calories, fat, sugar, sodium—are based on one serving. If a fruit juice drink says it has 15 grams of sugar per serving, that might not sound too bad. But if the bottle you plan to drink in one go actually contains three servings, you are consuming 45 grams of sugar. By focusing on the per-serving information, you get a much more realistic picture of what you're putting into your body. This allows you to accurately compare the sugar in one brand's serving versus another's, empowering you to choose the genuinely healthier option.
How to Do It in the Supermarket
Putting this into practice is simple. When you're comparing two similar products, ignore the flashy front-of-pack marketing. Turn both packages over and find the Nutrition Facts label. First, look at the serving size and the number of servings per container. One brand of instant noodles might define a serving as 70g, while another uses 100g. To make a fair comparison, you might need to do some quick mental math to standardise them. Then, compare the calories, added sugar, and sodium per serving. Finally, divide the price by the number of servings in the package to find the true cost per meal. The healthiest and most budget-friendly option will quickly become clear.
