Every batch of beer leaves a pile of soggy grain behind, and for as long as anyone can remember that residue has gone straight into animal feed. Three graduates from the Technical University of Munich looked at the same heap and saw a drink. Their company, Circular Grain, has built a milk alternative out of the leftovers of brewing, and it plans to put the product on shelves in September.
The drink is called Tremi, and the pitch behind it is nutritional rather than nostalgic. The founders say it carries about three times as much protein as ordinary oat milk while holding far less sugar, a combination aimed at shoppers who scan labels for grams of protein and flinch at the sweetness hidden in many plant based cartons. In a market crowded with oat, soy, and almond options, that profile is the hook.
From a student project to a launch
Circular Grain grew out of a university project rather than a boardroom. Its three founders, Nathalie Stellwag, Marina Hijano Moreno, and Denise Ilogu, turned an academic idea into a company, and they have since pulled together more than 500,000 euros in grants and investor backing to move from prototype to production. That mix of public funding and private money is the usual path for a food science idea trying to cross from the lab into a supermarket fridge.
The choice of raw material is the clever part. Spent grain, the mash left once brewers have drawn the sugars they need, is produced in enormous volumes and has almost no glamour, which is exactly why it is cheap and plentiful. By treating it as an ingredient rather than a waste stream, the team gets a low cost base that is already rich in the fibre and protein that a milk alternative wants to advertise.
Why the protein angle matters
The timing suits the mood of the market. Protein has become the nutrient shoppers chase hardest, stamped across yoghurts, bars, and drinks as a shorthand for health, while sugar has become the thing they most want to avoid. A plant based milk that can genuinely claim more of one and less of the other is aiming straight at that anxiety, and it does so without leaning on the dairy cow that many buyers are trying to move away from.
There is a practical question waiting behind the nutrition table, and it is the same one every new milk alternative faces. Taste and texture decide whether a carton earns a second purchase, and grain based drinks have to work hard to avoid a heavy or grainy finish. The founders will need to convince people that a glass of Tremi is something to enjoy rather than merely a virtuous choice, because no amount of protein rescues a drink that no one wants to sip twice.
A small idea with a bigger point
What gives the project its wider appeal is the loop it closes. Breweries generate a byproduct they normally pay to move, and here that same material becomes the foundation of a consumer product with a health story attached. It is a neat example of the circular thinking that gives the company its name, taking something already made and finding a second, higher use for it rather than growing a new crop from scratch.
Whether Tremi becomes a fixture or a curiosity will come down to the ordinary tests of retail, price on the shelf, flavour in the glass, and whether enough shoppers are willing to try a milk poured, in a sense, from the bottom of the brewing tank. For now, three graduates have turned a waste pile into a launch date, and in September the rest of the country gets to decide what it thinks of beer that has been reborn as a drink you can pour over cereal.