Key takeaways
- Cell-based milk is designed to contain the same proteins, fats and lactose as cow's milk, so it should taste and behave similarly.
- Consumer tastings have only just begun, and no independent taste evaluations have been published.
- Cow's milk provides about 8 grams of protein and around 276–299 mg of calcium per cup. Cell-based milk will need to match that, and some nutrients may need to be added.
- Compared with plant milks, it should be much closer to dairy in protein and cooking performance.
Two questions come up more than any others: does it taste like milk? and is it good for you? The honest answer to both is “probably, but we’ll know more soon.”
Why it should taste like milk
The flavor and texture of milk come mostly from three things:
- Fat, packaged in tiny globules that give milk its creaminess
- Proteins, especially caseins and whey, which affect mouthfeel and how milk behaves when heated
- Lactose, which provides milk’s gentle sweetness
Cell-based milk is made by the same type of cells that produce all three inside a cow (see how it’s made). Brown Foods said in 2025 that testing at the Whitehead Institute found its UnReal Milk contained the major dairy proteins, milk fats and carbohydrates. If the molecules match, the taste should be close.
Why it might taste a little different
Conventional milk carries traces of everything that happens in and around the cow. Grass-fed milk tastes different from grain-fed milk; spring milk differs from winter milk. Some of those flavor notes come from compounds that pass into milk from the cow’s diet and bloodstream, not from the mammary cells themselves.
Cell-based milk, made from a controlled growth medium, may be more consistent but also more neutral. Producers could adjust the flavor by tuning the media or the fat content, much as dairies standardize milk today.
Tasting status: Brown Foods has begun US taste tests, according to AgDaily, but we haven’t found independent, published taste evaluations. Opalia’s early output is going to dairy companies for product development rather than to the public.
Nutrition: what cell-based milk needs to match
Here’s the benchmark. One cup (about 240 mL) of cow’s milk provides roughly:
- Protein: about 8 grams, with all essential amino acids
- Calcium: 276 mg for whole milk and 299 mg for nonfat, according to the NIH Office of Dietary Supplements. That’s roughly 28–30% of the 1,000 mg daily recommendation for adults aged 19–50.
- Vitamin D: mostly added through fortification in the US
- Vitamin B12, riboflavin, phosphorus and potassium
Because the mammary cells make the proteins, fat and lactose, those should come naturally. Some vitamins and minerals in cow’s milk, though, travel from the cow’s blood into the milk. In a bioreactor, they’d come from the growth media, or be added afterward. Expect cell-based milk to be fortified, just as most cow’s milk and plant milks already are.
How it compares with plant milks
This is where cell-based milk could stand out. Plant milks vary widely, and most fall short of dairy on protein.
| Per cup (approx.) | Cow’s milk | Soy milk | Oat milk | Almond milk |
|---|---|---|---|---|
| Protein | ~8 g | ~7 g | ~3 g | ~1 g |
| Calcium | 276–299 mg | ~300 mg if fortified | Varies, if fortified | Varies, if fortified |
| Complete protein | Yes | Yes | No | No |
| Natural lactose | Yes | No | No | No |
Plant milk values vary by brand and fortification. Always check the label.
Cell-based milk aims to land in the cow’s milk column on every row.
Will it be healthier than cow’s milk?
Not necessarily. If it’s chemically the same, it will have the same benefits and the same drawbacks, including saturated fat in whole milk and lactose for those who can’t digest it.
There are a few potential advantages, though:
- No antibiotic or hormone residues, since there’s no animal to treat
- Consistency, because the composition can be controlled precisely
- Customization, at least in principle, such as different fat profiles or lactose-reduced versions
Those benefits are speculative until products are on the market and independently tested.
Who should be cautious
- People with milk allergy: cell-based milk contains the same milk proteins. Treat it like dairy.
- People with lactose intolerance: whole-milk replicas are expected to contain lactose.
Our guide to lactose intolerance and milk allergy covers both in detail.
Sources
- NIH Office of Dietary Supplements, Calcium fact sheet for health professionals
- Brown Foods, “The World’s First Lab-Made Whole Cow Milk is Here”, February 25, 2025
- Green Queen, Opalia lands first sale of cell-based milk, August 2025
