Yogurt: how to choose based on ingredients
In the yogurt aisle, there are three different products with similar names, and the difference between them is defined by law, not by advertising. You can distinguish them by a single word on the packaging and one line in the nutrition table.
Yogurt, yogurt product, and "bio-yogurt"
Technical Regulation TR TS 033/2013 on milk and dairy products defines yogurt as a fermented milk product with an increased content of non-fat milk solids, fermented with a specific pair of starter cultures: thermophilic streptococcus and bulgarian bacillus.
Two practical rules follow from this.
A "yogurt product" is not yogurt. This is the name for items that do not meet the definition: for example, a product that has undergone heat treatment after fermentation or contains non-dairy fats. Heat treatment kills the very cultures for which the product was fermented, but it allows the product to be stored for months without refrigeration.
Hence a simple check that doesn't require reading the ingredients list at all: if the product is not in the refrigerator, it contains no live cultures.
Prefixes like "bio," "active," or "plus" have no legal meaning. The regulation does not define them, so they only reflect the marketer's intentions. What matters is what is written in the product name in small print next to the net weight.
How much sugar is actually in it
This is the most common reading error. In the nutrition facts table, sugars are listed in total, but milk already contains its own sugar—lactose, about 4.5–5 g per 100 g. It falls into the same line.
Therefore, the arithmetic is as follows:
| Product | Sugars in the table | Of which added, approximately |
|---|---|---|
| Natural yogurt without additives | 4–5 g | 0 |
| Greek yogurt without additives | 3–4 g | 0 |
| Drinking yogurt with fruit filling | 10–14 g | 5–9 g |
| Dessert yogurt, "with pieces" | 13–17 g | 8–12 g |
The numbers in the first two rows are the threshold below which there is no added sugar. Everything in the table above five grams has been added by the manufacturer. A 290 ml cup with 13 grams of sugar per 100 g is about 25 grams of added sugar at once, which is five teaspoons.
Under what other names sugar appears in the ingredients list—a separate analysis.
What to read in the ingredients
- The first line. Milk is good. "Normalized milk" is also fine; it means the fat content has been adjusted to the required level. "Reconstituted milk" means water and milk powder.
- Starter culture. It must be named. Real yogurt contains thermophilic streptococcus and bulgarian bacillus.
- Filling. "Fruit filling" is not fruit: it is usually puree, sugar, thickener, coloring, and flavoring in one line.
- Thickeners. Starch, pectin, gelatin, gums. They are harmless on their own, but a thick natural yogurt should not contain them: the thickness there comes from protein. What each group does—an analysis of stabilizers.
- Protein in the table. The best single-line indicator of quality: regular yogurt has 3–4 g, Greek has 8–10 g. The latter means the whey was strained out, rather than starch being added.
Greek and "Greek-style"
Real Greek yogurt is obtained by straining: some of the whey is removed, which concentrates the protein and solids. This results in thickness, 8–10 g of protein per 100 g, and significantly less lactose.
A "Greek-style" product achieves thickness using thickeners, and sometimes milk powder. You can tell the difference by the protein line in the table: if it says 3–4 grams, it was not strained.
Live cultures: what is known about them
Yogurt is the most common source of live bacteria in a standard diet, and this creates a temptation to expect the same things from it that probiotic supplements promise. Expectations should be calibrated: effects in studies are strain-specific, meaning they are tied to a specific strain and a specific condition, not to the word "probiotic" on the package. What is proven and what is not—an analysis here.
One thing has been shown quite reliably: live yogurt cultures break down some of the lactose, which is why yogurt is better tolerated than milk if you have lactose intolerance. More details—why milk becomes harder to digest with age.
Choosing in ten seconds
A sequence of actions at the shelf if you don't have time to read everything:
- Take it from the refrigerator, not from a shelf at room temperature.
- Check the name: "yogurt," not "yogurt product."
- Check the "sugars" line: up to 5 g means no added sugar.
- Check the "protein" line: the higher it is, the denser the product is by nature, not by thickeners.
Flavoring can be handled at home: adding your own berries or a spoonful of jam to natural yogurt provides less sugar than a ready-made dessert yogurt and allows you to control the amount.
Frequently asked questions
- What is the difference between a yogurt product and yogurt?
- According to regulations, yogurt is fermented with thermophilic streptococcus and Lactobacillus bulgaricus and contains them in a live state. A yogurt product is anything that does not meet these criteria: for example, products that have undergone heat treatment after fermentation or contain non-dairy fats.
- How much added sugar is in yogurt?
- The amount is whatever exceeds 4–5 grams in the table: this is the milk's own lactose. If there are 13 g of sugars per 100 g, about 8 g have been added, which is approximately 25 grams per 290 ml cup.
- How to identify authentic Greek yogurt?
- Check the protein content: when whey is strained, it reaches 8–10 g per 100 g. If it says 3–4 g, the thickness was achieved by a thickener, not by concentration.
Read next
- Hidden sugar: under what names it appears in ingredients — The word "sugar" appears in ingredients less often than sugar itself does in a product: it has a dozen legal names, and the manufacturer has every right to use any of them.
- Stabilizers and thickeners: gums, starches, and pectin — Xanthan gum, guar gum, carrageenan, pectin, modified starch — this is a set of words that looks alarming on an ingredient label but means something quite boring: the product needs to have the right consistency and not separate before its expiration date.
- Lactose intolerance: why milk becomes harder to digest with age — Milk that caused no issues in childhood may start to trigger bloating and rumbling by your twenties—and this can feel like a malfunction that needs fixing.
This article is for general information. It is not medical advice, a diagnosis, or a prescription for treatment or a diet, and it does not replace a consultation with your doctor. If you have a health condition, are pregnant, take medication, or follow a diet prescribed to you, decisions about food belong with your doctor.
Figures from regulations, guidelines and studies are given as they stood when this article was prepared and may since have changed; check them against the primary sources. This article is not advertising, an offer, or individual advice, and neither the author nor the site owner is responsible for decisions taken on the basis of it.