Browsing the milk aisle of my local Tesco recently, I was struck by the range of options. Where once there would have been a simple selection – the classic trio of blue, green and red tops in the chiller cabinets, some UHT milk a few aisles down – I found a wide, and frankly wild, variety. Unhomogenised, Guernsey, lactose-free, “barista”... (and that’s before you even consider non-dairy). How did cow’s milk get so confusing?
According to Waitrose, demand for less processed milk, such as unhomogenised, is soaring. The causes are evident. People are seeking alternatives to ultra-processed foods, and that focus on more natural options extends to milk, says Jenny Thomason, UK head of commercial at Modern Milkman. “Customers want to know nobody has done something they’re not aware of to their milk.”
Tasha Cook, Ocado’s milk buyer, agrees. “We are seeing a renaissance in rich, traditional dairy, with whole milk sales up 32 per cent,” she explains. “Shoppers are seeking out indulgent flavour profiles and creamier textures.”
But not all cow’s milk is created equal. Here’s what the labels mean, and what their bottles (or cartons) deliver.
Regular milk (whole, semi-skimmed, skimmed)
Regular milk is pasteurised, which means it is heated to 72C for at least 15 seconds, before being quickly cooled to less than 3C to kill pathogens. It is also homogenised, a process which pumps the liquid through small holes to break down the fat globules, resulting in a consistent texture.
The main difference between whole, semi-skimmed and skimmed milk is the amount of fat and calories each contains: 4.7g of saturated fat and 130 calories per 200ml for whole, 1.1g and 95 calories for semi, 0.2g and 71 calories for skimmed. The fat impacts flavour, with whole milk tasting rich and creamy, and skimmed more watery and mild.
After the rise of plant-based alternatives, “old-fashioned” milk is experiencing a renaissance, as influencers espouse its benefits and customers rediscover the delights of a blue top. At Waitrose, sales of milk (whole, semi and skimmed) are up 22 per cent on last year. Dr Sammie Gill, a registered dietitian, says all milk is “nutritionally complex”, which may also help explain the rise in sales.
Where you’ll find it: Every supermarket and corner shop in the country
Unhomogenised milk
Unhomogenised milk foregoes the process of breaking down the fat, which proponents believe results in more natural, digestible milk. The cream, being lighter than the liquid, rises, leading to the creamy tops many will remember from their youth.
While the jury is out on whether it is, in fact, more digestible, demand is soaring. After a mere sip of the first option I tried, from the Tom Parker Creamery, it is easy to see why. The milk was gentle, rich, delicately sweet, yet not excessively creamy. It proved excellent on cereal, providing actual flavour rather than merely a liquid accompaniment. Whether this is down to the quality of the particular dairy or the lack of homogenisation is unclear; Thomason argues that homogenisation doesn’t necessarily change a milk’s flavour.
Where you’ll find it: Widely available in larger supermarkets and delis
Raw/unpasteurised milk
The least processed milk, forgoing the heating stage which kills bacteria. Consequently, rules around it are strict. “It’s illegal to sell unpasteurised milk unless you’re a farmer at the gate,” says Thomason. “You have to make clear it’s raw, it comes from the farm, and the farm undergoes way more checks.” Modern Milkman receives more requests for raw, or unpasteurised, milk than any other style – by a significant margin.
Proponents, including Donald Trump’s health secretary, Robert F Kennedy Jr, argue that raw milk provides more nutrients and beneficial bacteria, and retains more flavour, but most health experts warn against it. Without pasteurisation, dangerous bacteria can survive in the milk. “Raw milk can pose a particular risk to pregnant women, young children, older people, people who are immunocompromised, and people who are already ill,” says Gill.
Where you’ll find it: You’ll have to go straight to the source and find a farm that sells it
Brewed milk
Heated to a lower temperature – 68C for around five minutes – than regular milk, preserving many of the benefits of unpasteurised milk while still meeting safety standards. Modern Milkman launched “brewed milk” in April 2026 in response to rising demand for raw milk. “It’s the best possible version of raw-adjacent milk we can give our customers,” says Thomason.
When I tried a bottle of Mossgiel Organic Farm’s brewed whole milk, I was impressed. It was thick and creamy, almost like single cream. I could practically chew it. And it was absolutely delicious, as fresh as can be, like a spring morning.
Where you’ll find it: Modern Milkman
Organic milk
A rearing rather than milk-preparation method, organic milk can fit into most of the above (and below) categories, and sales are up 9 per cent year on year at Waitrose. The term “organic” is heavily regulated and is primarily to do with what the animal eats, how it is reared, and the avoidance of antibiotics. Behind good-quality milk are “cows [that are] looked after incredibly well,” Thomason argues, and that can reveal itself in a superior taste.
Where you’ll find it: Widely available in supermarkets and corner shops
Jersey/Guernsey milk
The Channel Islands have their own similar breeds of cattle – short, stocky, and producing very fatty milk (6 per cent fat, if not more, which is up to 25 per cent more than regular milk). The milk is rich, creamy – a bottle I tried was heavily clotted on top – and usually unhomogenised.
Far from putting people off, the fat content, which leads to a pearly, almost light-yellow liquid, is attracting customers. At Waitrose, sales of Jersey and Guernsey milk are up 6 per cent, while at Ocado, sales of Graham’s Gold Jersey milk have risen 67 per cent.
The name reflects the breed rather than the place, and Jersey and Guernsey milk can come from anywhere in the country. Thomason says most customers don’t use it as an all-rounder. It can be too fatty for some drinks – perhaps preferring it as a weekend treat on cereal.
Where you’ll find it: Widely available in supermarkets and fancier corner shops and delis
Barista milk
With interest in coffee continuing to grow, people are increasingly turning to high-end coffee machines and attempting to recreate the complex latte art they’ve seen at their local coffee shop. Baristas prefer a fatty milk as it froths well and holds its glossiness for far longer than standard milk. Brands like the Cornish Dairy Co are marketing these milks as “barista milk” but, Thomason argues, you’ll achieve the same effect with the likes of Jersey or unhomogenised milk.
Where you’ll find it: At larger supermarkets and specialist retailers
UHT milk
Standing for ultra-high temperature, the milk is quickly heated to a far higher temperature than regular milk (135C to 150C), resulting in a much longer shelf life (several months at room temperature before opening). It can result in a small reduction in certain vitamins, like B12 and folate, but others are unaffected, says Gill, adding that “these minor changes have little impact on the nutritional value of the milk and are unlikely to make a meaningful difference to your diet over the course of a day”. It does, however, impact flavour. Anyone who has stayed in a hotel room will have sampled the small sachets of UHT milk, which is sweet and lacks creaminess.
Where you’ll find it: Widely available at supermarkets and corner shops
Filtered
Standard milk that has an extra level of filtration, removing even more bacteria, which provides it with a longer shelf life – around 21 days unopened in the fridge. It is nutritionally comparable to regular cow’s milk, says Gill, but, unlike UHT, there’s minimal flavour difference compared with standard milk.
Where you’ll find it: Widely available at supermarkets and corner shops
Lactose-free
Regular milk with added lactase, an enzyme that breaks down lactose into simpler sugars, making it easier for those with a lactose intolerance to digest. It leads to a sweeter taste, says Gill, but is nutritionally equivalent to regular milk. “It provides the same high-quality proteins, calcium and essential vitamins and minerals,” Gill adds.
Where you’ll find it: Most supermarkets
Cow-calf
The number of cow-calf dairies such as Wicton Farm in Herefordshire, which keep the calf with its mother for months rather than removing it soon after birth, as is conventional, is rising across the country (25 and growing, according to an online directory). The resulting milk is an animal-welfare choice; few mainstream shops stock it, and most is sold directly from farms, although Mossgiel, which supplies Modern Milkman’s brewed milk, is a cow-calf dairy.
The rearing method “doesn’t change the milk overall, although a happier cow can produce better milk,” argues Thomason, who points out that there is debate over whether it is kinder, in the long run, to leave calves with their mothers than remove them.
Where you’ll find it: Direct from farms like Wicton Farm, or via Modern Milkman