Malted milk is a powder made by combining whole milk with an extract of barley malt and wheat flour, then removing the water. The result is a shelf-stable, slightly sweet powder with a distinctive toasty, almost caramel-like flavor. You’ve likely encountered it in “malted” milkshakes, Whoppers candy, or the classic Horlicks drink, but it started as something far less indulgent: a nutritional supplement for infants.
How Malted Milk Is Made
The process starts with barley grain that has been “malted,” meaning it’s been soaked in water, allowed to partially germinate, then dried. This activates natural enzymes in the grain that convert starches into sugars, which is why malted products taste sweet without a lot of added sugar. The malted barley is mashed with wheat flour and water, heated to extract the sugars and nutrients, then blended with whole milk. The mixture is dried into a powder.
The U.S. Food and Drug Administration defines malted milk as containing no less than 7.5 percent butterfat and no more than 3.5 percent moisture. Small amounts of salt and baking soda may be added, but those are the only permitted extras. This definition has been the compliance guide since 1936, and no formal standard of identity has replaced it.
How It Differs From Other Malt Powders
Walk into a baking supply store and you’ll find several malt-based products that aren’t interchangeable. Diastatic malt powder is dried at low temperatures, keeping its starch-converting enzymes active. Bakers add it to bread dough to feed yeast and speed up rising. Non-diastatic malt powder is heated at higher temperatures, which kills those enzymes. It adds color and flavor to baked goods but won’t affect how dough rises.
Malted milk powder is a different product entirely. It contains dairy and is primarily used for sweetness and flavor rather than as a baking aid. Think of it more like sweetened condensed milk in powder form than like a bread-baking ingredient. Confusing the three can lead to very different results in the kitchen.
A Brief History
Brothers James and William Horlick emigrated from England to Racine, Wisconsin, where they formed a company in 1873 to manufacture a wheat-and-malt-based infant food. James, a pharmacist, had been experimenting with the formula in London. Ten years later, they patented an improved version enhanced with dried milk (Wisconsin being dairy country, after all) and marketed it under the name “diastoid.” That name didn’t stick, but the product did. It was originally sold as a nutritional supplement for infants and people recovering from illness.
The shift from health food to treat happened at the soda fountain. A Walgreens soda counter is credited as the first place to blend malted milk powder into a milkshake, and the “malt” became an American classic. The product was patented on June 5, 1883.
What It Tastes Like
Malted milk has a flavor that’s hard to describe if you haven’t tasted it. It’s warm and toasty with a rounded sweetness, somewhere between caramel and graham cracker, with a faintly nutty quality. The malting process creates those flavors by transforming grain starches into sugars through enzymatic action. Of all cereal grains, barley is the most commonly malted, and it’s the same grain responsible for the flavor profiles of beer, whiskey, and malt vinegar.
Common Uses in Cooking and Drinks
The most famous use is the malted milkshake. Making one is simple: blend ice cream, milk, and a few tablespoons of malted milk powder. A generous amount of the powder (around four tablespoons per shake) gives a bold, satisfying flavor that transforms an ordinary milkshake into something more complex. Chocolate malts are the classic pairing, but vanilla works just as well.
Beyond milkshakes, malted milk powder shows up in baking recipes for cookies, brownies, and cakes where it adds depth and a subtle sweetness. It dissolves easily into hot milk for a warm drink, which is how Horlicks is still consumed in many parts of the world. Some bakers fold it into frostings or use it to flavor homemade ice cream bases. Whoppers, the chocolate-coated candy, are essentially malted milk balls at their core.
Nutritional Profile
A cup of chocolate malted milk prepared with whole milk provides roughly 260 mg of calcium, 241 mg of phosphorus, 456 mg of potassium, and about 1.1 mcg of vitamin B12. That calcium content is slightly higher than a plain glass of milk because the malt powder contributes additional minerals. The potassium level is notable too, comparable to eating a small banana. The drink also delivers protein and fat from the whole milk base.
Malted milk powder does contain sugar, both from the natural malt sugars and sometimes from added sweeteners depending on the brand. It’s calorie-dense for its volume, so it delivers energy quickly, which is part of why it was originally marketed as a nutritional supplement.
Who Should Avoid It
Malted milk contains both gluten and lactose, making it off-limits for two common dietary restrictions. The barley malt and wheat flour mean it is not safe for people with celiac disease or gluten sensitivity. The word “malt” on any food label almost always indicates barley is involved. Beyond Celiac, a leading celiac disease organization, advises always avoiding malted milk drinks.
The whole milk component means malted milk also contains lactose. This is worth noting because secondary lactose intolerance is common in people newly diagnosed with celiac disease, since damage to the small intestine reduces the body’s ability to produce the enzyme that digests milk sugar. For anyone managing both conditions, malted milk is a double concern.