Vegan milk is any beverage made from plants that serves as a substitute for cow’s milk. These drinks are produced by soaking, grinding, and straining plant materials (nuts, grains, seeds, or legumes) with water, then often fortifying the result with calcium, vitamin D, and other nutrients to bring the profile closer to dairy. The global plant-based milk market is projected to reach about $24 billion in 2026 and continue growing, reflecting how mainstream these products have become.
Types of Vegan Milk
Plant-based milks fall into five broad categories based on their source ingredient:
- Legume-based: soy, pea, peanut, lupin
- Nut-based: almond, coconut, hazelnut, cashew, pistachio, walnut
- Cereal-based: oat, rice, corn, spelt
- Seed-based: hemp, flax, sesame, sunflower
- Pseudo-cereal-based: quinoa, amaranth, teff
Soy and almond have dominated grocery shelves for years, but oat milk has surged in popularity, especially in coffee shops. Each type tastes noticeably different and behaves differently in cooking, so people often keep more than one on hand.
How Vegan Milk Is Made
The basic process is simple enough to do at home: soak the raw ingredient in water, blend it, then strain out the solids. Commercial production scales this up with industrial grinders and high-pressure homogenizers that break fat and protein particles into tiny, uniform pieces so the liquid stays smooth instead of separating in the carton. The milk is then heat-treated to kill bacteria and extend shelf life, similar to how dairy milk is pasteurized.
Most commercial brands add a few extra ingredients during production. Thickeners like gellan gum and xanthan gum increase viscosity and keep the liquid from separating on the shelf. Emulsifiers such as lecithin (often from sunflower or soy) and sugar esters help fat droplets stay evenly distributed in the water rather than floating to the top. These additives are used in tiny amounts and are considered safe, but if you prefer a cleaner ingredient list, some brands skip the gums entirely and rely on the plant’s own proteins and fats for stability.
Nutritional Differences Between Types
Not all vegan milks are nutritionally equal, and the gaps between them are significant. Soy milk is the closest match to cow’s milk in protein, delivering roughly 3.8 grams per 100 ml compared to about 3.3 grams in cow’s milk. Oat milk drops to around 0.5 grams of protein per 100 ml, and almond milk lands near 1 gram. That difference matters if you’re relying on milk as a protein source in smoothies or cereal.
Calorie counts vary just as widely. Cow’s milk runs about 65 calories per 100 ml. Soy milk is in a similar range at roughly 40 calories, while almond milk can be as low as 33 calories per 100 ml, making it a common pick for people watching their calorie intake. Oat milk tends to sit in the middle, around 40 to 45 calories, with more of those calories coming from carbohydrates than fat or protein.
Non-coconut plant milks generally contain very little saturated fat and zero cholesterol. Swapping 250 ml of low-fat dairy milk for the same amount of fortified soy or oat milk can reduce saturated fat intake by 8 to 9 percent in a typical daily diet. Soy milk also provides meaningful amounts of folate and certain trace minerals that other plant milks lack.
Fortification: What’s Added and Why
On their own, most plant milks are low in calcium, vitamin D, and vitamin B12, nutrients that cow’s milk provides naturally or through its own fortification. To close that gap, manufacturers add these nutrients during production. The FDA has noted that many consumers expect products labeled “soy milk” or “almond milk” to have a nutritional profile similar to dairy milk, which is why the agency’s 2023 draft guidance recommends that brands include a voluntary nutrient comparison on the label when their product differs from cow’s milk.
Fortification levels vary between brands, sometimes dramatically. One carton of almond milk might contain 45 percent of your daily calcium needs per serving while another provides only 10 percent. Checking the nutrition label is the only reliable way to know what you’re getting. If you’re replacing dairy entirely, look for a brand that fortifies with calcium, vitamin D, and B12 at a minimum.
Environmental Footprint
One of the main reasons people switch to plant milk is the environmental impact. Soy, oat, almond, pea, and coconut milks all produce 62 to 78 percent fewer greenhouse gas emissions per liter than cow’s milk. Oat milk performs especially well across environmental measures: one study found it scored as well as or better than both organic and conventional cow’s milk across 12 different impact categories, including land use, acidification, and ecosystem damage. Soy milk performed similarly.
The picture gets more complicated with water. Almond milk stands out as the most water-intensive plant milk, particularly when the almonds are grown in drought-prone California. Its water footprint can actually exceed that of cow’s milk produced in a region with abundant rainfall. Soy milk, by contrast, uses an estimated 88 percent less water than dairy. Rice milk tends to be the most greenhouse-gas-intensive among plant milks, though still well below dairy.
No single plant milk wins on every environmental metric. If you’re choosing based on sustainability, oat and soy are the strongest all-around performers.
Cooking, Baking, and Frothing
How a vegan milk behaves in your kitchen depends largely on its protein and fat content. Protein is what creates and stabilizes foam, which is why soy milk froths better than oat or coconut-soy blends. At cold temperatures, cow’s milk still outperforms all plant options for cappuccino-style foam because its proteins are more effective at trapping air bubbles. Once heated to around 65°C (150°F), though, the foaming gap narrows considerably and most plant milks perform reasonably well.
For baking, soy and oat milks are the most versatile substitutes. Their moderate fat content and body make them work in muffins, pancakes, and sauces without drastically changing the texture. Almond milk is thinner and lower in protein, so baked goods made with it can turn out slightly less moist. Coconut milk (the carton variety, not canned) adds a subtle sweetness that works in some recipes but clashes with savory ones. The main thing to watch for is sweetened versus unsweetened. Flavored or sweetened varieties can throw off a recipe’s sugar balance.
Who Vegan Milk Is For
The most obvious group is people with lactose malabsorption, which is common in many populations worldwide. Plant milks contain no lactose at all, so they eliminate the bloating, gas, and discomfort that dairy causes for these individuals. People with a cow’s milk protein allergy also need a plant-based option, though they should avoid soy if they have a concurrent soy allergy.
Beyond medical reasons, many people choose vegan milk for ethical concerns about animal agriculture, to lower their environmental footprint, or simply because they prefer the taste. Oat milk’s creamy texture has made converts out of people who never liked dairy alternatives before. Others rotate between types depending on the use: almond milk in smoothies for lower calories, soy milk in coffee for better foam, oat milk on cereal for flavor.
The one group that needs extra caution is young children. Plant milks are not nutritionally equivalent to breast milk or infant formula, and even compared to whole cow’s milk, most plant options fall short on protein, fat, and calories that growing toddlers need. Fortified soy milk is the closest substitute for children over one year old, but the decision is worth discussing with a pediatrician.