- Tension: Starbucks built its entire brand on the premium coffee experience, but its fastest-growing add-on is a product that makes the coffee taste like something other than coffee — and customers are paying a two-dollar premium for the substitution.
- Noise: The conversation has been framed as either a wellness culture win or an affront to serious coffee, with both sides missing what the volume data is actually saying about how the meaning of “premium” has quietly shifted beneath the brand’s feet.
- The Direct Message: When a coffee company’s growth engine runs on a product that tastes less like coffee, the category has changed — and the question isn’t whether to judge that, but whether the company understands what it has become.
To learn more about our editorial approach, explore The Direct Message methodology.
Starbucks has not made a large public announcement about what protein cold foam is doing to its sales figures, but the disclosure has arrived through earnings commentary. Sam Henderson, the company’s EMEA Group Manager of Beverage Development, told CNBC that Starbucks is “selling almost as much protein cold foam as we do flat whites” — and flat whites, in his words, are “a phenomenally popular beverage.”
The product — a dense, sweetened foam made from protein powder, milk, and typically a vanilla flavouring — is now selling at volumes comparable to some of Starbucks’ most established core drinks. For a product that has been on menus for a relatively short time, this is a meaningful signal about what a significant segment of Starbucks customers actually wants.
The mechanics of the product are straightforward. Ordered as an add-on to a cold brew, iced coffee, or other cold beverage, protein cold foam sits on top of the drink and is usually consumed together with it. It adds 15 to 18 grams of protein on its own, or up to roughly 26 grams depending on the drink it’s added to. It adds approximately two dollars to the price. And it adds a flavour profile that most reviewers and customers describe as substantially different from coffee — closer, in taste, to a vanilla protein shake than to anything in the traditional espresso tradition.
That final detail is the one that matters most.
What the order pattern is actually showing
There are two ways to read the success of protein cold foam at Starbucks, and they lead to very different conclusions about what the company is and where it is going. The first reading is straightforwardly positive from a business perspective: Starbucks identified a consumer trend — the high-protein diet movement, the mainstreaming of protein supplementation, the appetite for functional food and drink that does something beyond tasting good — and created a product that captures that trend. Volume followed. This is competent product development.
The second reading is more complicated. When an add-on that substantially alters the flavour profile of a coffee drink is selling at the volumes Starbucks is reporting, it suggests something about the base behaviour driving those orders: that a significant portion of customers are not primarily at Starbucks to drink coffee. They are there to perform the ritual of a café order while consuming something that fits into their nutritional framework. The coffee is the vehicle and the social context. The actual product — the thing they wanted — is the foam.
Industry coverage of the functional beverage category — including CNBC’s reporting on the protein and wellness drink boom — has tracked how protein fortification has moved rapidly from sports nutrition into everyday food and drink.
Industry coverage of the functional beverage category — including CNBC’s reporting on the protein and wellness drink boom</a> — has tracked how protein fortification has moved rapidly from sports nutrition into everyday food and drink — into yogurts, cereals, snack bars, and now café beverages — driven by consumers who are not athletes but who have absorbed, through years of wellness marketing, the conviction that higher protein intake is inherently beneficial. The Starbucks customer ordering protein cold foam is not necessarily thinking about macros in any precise sense. They are responding to a cultural current in which “protein” has become a proxy for “healthy choice” in a way that is largely independent of the food it’s attached to.
The brand identity question Starbucks hasn’t answered
Starbucks has been navigating the tension between its specialty coffee identity and its actual menu for a long time. Critics began pointing to the drift in the early 2010s, as Frappuccinos, seasonal syrups, and flavour combinations proliferated and the drinks at the top of the popularity rankings became further and further removed from anything that coffee traditionalists would recognise as coffee.
Cold, heavily customized beverages have, for several years, made up the bulk of Starbucks’ growth, with cold drinks rising from 37% of beverage sales in 2013 to about 75% in fiscal 2024 — a shift in which the coffee increasingly functions as a background note rather than the point of the experience.
Protein cold foam is a continuation of this trajectory, not a new direction. But it is a more explicit version of it, because the protein foam does something the flavoured syrups don’t: it changes the texture and primary flavour of the drink in ways that are immediately perceptible, and it does so in a direction that moves the product further from coffee, not just further from unflavoured coffee. Ordering a vanilla latte is still, in some experiential sense, ordering coffee. Ordering a cold brew with protein cold foam and asking it to be light on the coffee is ordering a protein shake with a café context.
This is a meaningful distinction for a company whose founding mythology is built on the idea of the Italian espresso bar, the third place between home and work, the culture of coffee as a considered ritual. Howard Schultz’s original articulation of the Starbucks vision was explicitly about coffee — about bringing European coffee culture to America, about elevating what most Americans in the 1980s were drinking out of percolators and filter machines. The protein cold foam era is a long way from that origin story, and the company has not yet been entirely clear about whether it has consciously left that story behind or simply drifted past it while looking at the quarterly numbers.
What competitors are doing with this information
The functional beverage trend that Starbucks is surfing with protein cold foam has not gone unnoticed by competitors. Dutch Bros, which has grown rapidly in the US market on drive-throughs and a younger, more customisable brand identity, has been building protein and functional offerings into its menu with fewer of the identity complications Starbucks faces.
McDonald’s McCafé has tested protein-forward beverages in several markets. Independent café operators in urban areas have been offering protein additions for longer, typically positioned at the health-conscious end of their customer base.
The difference is that for most of these competitors, functional ingredients are additions to an identity rather than a complication of one. Starbucks carries a heritage claim — to coffee, to craft, to a particular kind of premium experience — that its menu increasingly struggles to honour. The volume of protein cold foam sales does not, by itself, resolve that tension. It intensifies it.
The premium is for the context, not the coffee
There is a useful way to understand what Starbucks customers ordering protein cold foam are actually purchasing, and it is not the protein. Protein powder is inexpensive, widely available, and can be added to any beverage at home for a fraction of the cost. The premium the customer is paying at Starbucks is for something else: the barista, the cup, the branded environment, the social legibility of a Starbucks order, the ritual. The protein is almost incidental to the transaction in economic terms — what it does is give the customer a health-adjacent reason to make a purchase they were going to make anyway.
This has historically been how Starbucks works. The company understood before most of the food industry that people were not primarily paying for coffee when they bought a Starbucks coffee. They were paying for an experience, a status signal, a routine. The coffee was the delivery mechanism. Protein cold foam is the same logic applied to a different cultural moment — one in which wellness markers have replaced, or supplemented, the coffee connoisseur markers as the thing worth signalling.
What comes next
For Starbucks, the strategic question protein cold foam raises is not whether to keep selling it. Volume that significant is not going anywhere. The question is whether the company is willing to update its self-conception to match what it has demonstrably become — a beverage experience company that serves a broad range of functional, flavoured, and fortified drinks, for which coffee is one input among several — or whether it will continue to present itself as a coffee company while the menu moves in a different direction.
The companies that navigate these transitions most effectively tend to be the ones that make the shift explicitly rather than drifting through it. A Starbucks that names itself as a beverage innovation company, invests in category-defining functional products, and stops trading on a coffee heritage that its menu no longer fully represents would be a coherent entity. A Starbucks that sells protein foam at flat-white volumes while continuing to position around artisanal coffee is selling a story that the order data doesn’t quite support. The customer ordering the protein cold foam already knows what they want — the open question is whether Starbucks has caught up to its own customer.
