You buy Greek yoghurt because everyone keeps telling you it’s a good source of protein. Then you turn the pot around.

3.7g per 100g?

Hang on. Wasn’t it supposed to be closer to 10g?

The confusion makes sense. Similar-looking names can sit on products with quite different nutrition labels. So let’s look at six plain yoghurts sold in the UK and unpack what’s going on.

Six UK yoghurt labels, side by side

Everything here is plain yoghurt. The figures are per 100g, so different pack sizes don’t muddy the comparison.

This is a selected label comparison, not a laboratory analysis or taste test. Products were chosen to show differences across own-brand and branded options, including different fat levels. It is not a survey of every UK yoghurt. Figures come from the linked retailer listings; check your pack for formulation changes.

Notice that even the two Tesco Finest Greek yoghurts aren’t interchangeable for protein: 6.1g versus 9.8g. The name alone doesn’t give you the full picture. [2] [3]

Why can the protein content be so different?

Straining removes some of yoghurt’s liquid whey, leaving a more concentrated product. Manufacturers can also use filtration: Yeo Valley describes using a fine membrane to concentrate its Greek Recipe yoghurt. [7] [8]

But there are other ways to produce a thick, creamy texture. Yeo Valley explains that its separate Greek Style range is a stirred yoghurt, with its fat content and choice of cultures contributing to the texture. [8]

That’s why judging protein by how confidently your spoon stands up isn’t going to get you very far.

And it would be too simple to say “Greek-style means low protein” or “full-fat means low protein”. Look at FAGE Total 5%: it still lists 9g protein per 100g. These are different formulations, not a controlled experiment showing what removing fat does. [5]

What does that mean in an actual bowl?

For an illustrative 150g serving, multiply the per-100g figure by 1.5:

• Tesco Greek Style Natural: 5.6g protein.
• Tesco Finest 0% Greek: 14.7g protein.
• FAGE Total 0% Greek Recipe: 15.5g protein.

Those figures are calculated from the labels and rounded to one decimal place. A 150g bowl is an example, not a serving everyone needs to eat.

If you’re logging your breakfast, choose the entry matching your actual yoghurt. Picking a generic “Greek yoghurt” entry could make quite a difference.

Is the cheaper tub better value?

It depends what you’re comparing. At the listed regular prices, Tesco Greek Style Natural is £1.15 for 500g, while Tesco Finest 0% Greek is £4.10 for 1kg. That works out at 23p versus 41p per 100g. [1] [3]

The first costs less for the same weight of yoghurt. But divide that price by the protein supplied, and the cost per 10g of protein is approximately 62p versus 42p, respectively.

Neither calculation tells you which you’ll enjoy more, or which fits your budget at the checkout. It just answers a different question.

Price example checked 14 September 2026, using the stated pack sizes and regular online prices, excluding offers and delivery. Cost per 10g protein is a comparison unit, not a recommended portion. Local prices and availability may differ.

Compare the cost of all six

Here is the same calculation for every product. The 150g column compares equal bowls; the protein column compares equal amounts of protein.

Calculated from the pack price, pack weight and declared protein per 100g; rounded to the nearest penny. Offers and delivery are excluded. All six listings are from one retailer to keep the price snapshot consistent; this is not a cheapest-in-the-UK search.

Pack size matters: the FAGE 0% entry is a 150g single pot, while the FAGE 5% entry is a 950g tub. Their price difference cannot tell us whether 0% costs more than 5% generally. Compare the sizes you would actually buy, and consider whether you will finish a larger tub.

Within this selected set, Tesco Finest 0% has the lowest calculated cost per 10g of protein. Tesco Greek Style Natural has the lowest cost for a 150g bowl. Those are two useful answers to two different shopping priorities.

So, which would I choose?

For a breakfast where protein is the priority: I’d start by comparing the higher-protein options in the table, then look at price and choose one I enjoy. There’s no need to assume the most expensive brand wins.

For a dollop alongside a meal: flavour, texture and price might matter more. Every ingredient doesn’t have to do all the nutritional heavy lifting.

For an overall nutrition comparison: protein is only one part of it. These products also differ in fat and energy, and yoghurt can supply nutrients such as calcium. A protein leaderboard isn’t a complete health assessment. [7]

My advice? Before you change your breakfast, turn the tub around. You might discover that the yoghurt you already like does exactly what you need. Or that a different one makes getting more protein a little easier.

Sources and how this comparison was made

Product links are sources, not affiliate links. Nutrition and price calculations use the exact listed products and pack sizes. Manufacturing explanations are kept separate from the numerical label comparison.

1. Tesco Greek Style Natural, 500g — Tesco product information.
2. Tesco Finest Greek, 1kg — Tesco product information.
3. Tesco Finest 0% Greek, 1kg — Tesco product information.
4. FAGE Total 0% Greek Recipe, 150g — Tesco product information.
5. FAGE Total 5% Greek Recipe, 950g — Tesco product information.
6. Yeo Valley Organic Greek Recipe 0%, 850g — Tesco product information.
7. Harvard T.H. Chan School of Public Health, The Nutrition Source: Yogurt — background on straining and nutrients.
8. Yeo Valley: The Ultimate Yogurt Guide — the manufacturer’s explanation of its stirred and filtered ranges. Its general guide and individual retailer listings may give different figures; the table uses the exact product listings linked above.