Beyond the ‘Milk’ Label: A Guide to Plant-Based Drinks

The plant-based milk market has exploded in recent years, with options ranging from oat to almond, pea to coconut. Once a niche choice, these alternatives are now commonplace in coffee shops and kitchens, driven by health concerns, environmental awareness, and evolving tastes. However, a recent legal battle and growing scrutiny over ingredients raise questions about what these drinks truly offer. This article provides a comprehensive overview of the most popular plant-based milk alternatives, examining their nutritional profiles, potential health benefits, and what to look for on the label.

The Legal Definition of ‘Milk’

The very definition of “milk” is now under debate. Oatly, a Swedish oat drink brand, attempted to trademark the phrase “post-milk generation” but faced legal opposition from Dairy UK, the trade association representing the dairy industry. Dairy UK argued that the term “milk” should exclusively refer to animal products. In February 2026, the Supreme Court unanimously ruled in favor of Dairy UK, stating that Oatly’s use of “milk” was “confusing.” Oatly is now required to label its products as “oat drink” or “plant-based drink.”

Decoding Plant-Based Milk Alternatives: A Nutritional Breakdown

While marketed as healthy alternatives, plant-based milks vary significantly in their nutritional content. Here’s a closer look at some popular options:

Oat Milk – Best for Cappuccinos

Oat milk is currently the most popular dairy-free option, with approximately half a million liters sold daily in the UK. However, it’s generally lower in protein than cow’s milk, so it’s important to obtain protein from other dietary sources like lean meats, fish, eggs, tofu, and lentils. A popular brand, Oatly Oat Drink Vanilla, contains 68 kcal per 100ml, and 5.9g of sugar, with half a teaspoon being added sugar. It’s important to be mindful of sugar content, as it can quickly add up. A daily intake of under 30g of added sugar is generally recommended.

Health Rating: 3/5

Soya Milk – Closest to Cow’s Milk

Soya milk is nutritionally the closest match to cow’s milk, providing a similar protein content and often fortified with calcium and B12. A sweetened version, like Tesco Sweetened Soya Drink, contains 42 kcal per 100ml and 2.7g of sugar. Choosing unsweetened varieties is preferable to maximize the benefits of soya beans, or consuming soya beans directly through edamame or tofu. Research published in BMC Medicine in 2024 analyzed 17 studies and found that substituting cow’s milk with soya drinks (including sweetened versions) was associated with lower blood pressure, cholesterol, and inflammation.

Health Rating: 3/5

Coconut Milk – Packs in Flavor

Coconut milk can enhance the flavor of recipes like pancakes and smoothies. Alpro Barista Coconut contains 33 kcal per 100ml and a slight amount of saturated fat (0.7g per 100ml, representing 4% of the daily recommended allowance). It also contains sugar and stabilizers like gellan gum. While often categorized as “ultra-processed,” coconut milk isn’t necessarily comparable to confectionery, fizzy drinks, or fast food. Stabilizers aren’t inherently harmful and can allow for the addition of beneficial nutrients.

Health Rating: 4/5

Almond Milk – A Sweet Treat Swap

Almonds are rich in protein, fiber, zinc, and potassium, and almond drinks can be a source of antioxidants, potentially improving gastrointestinal health and preventing anemia. However, some brands, like Califia Farms Almond Barista, contain added sugar. It’s also important to note that some almond drinks may be low in protein and iodine, and lack B12 fortification.

Health Rating: 1/5

Rice Milk – Splash on Your Cereal

Rice milk is not recommended for children under five due to arsenic levels. Even for adults, it’s not a nutritionally complete dairy replacement due to its low protein content. Rude Health Organic Brown Rice Drink contains 64 kcal per 100ml and 5g of sugar, and also includes sunflower oil, which is often found in ultra-processed foods. While the amount of oil is small (less than a teaspoon per liter), it’s a factor to consider.

Health Rating: 2/5

Key Takeaways

• Plant-based milks vary significantly in nutritional content.
• Soya milk is the closest nutritional match to cow’s milk.
• Oat milk is popular but lower in protein.
• Be mindful of added sugar in all varieties.
• Consider your individual dietary needs and preferences when choosing a plant-based milk alternative.