COLD MERGE - a favourite coffee, open-mindedly different
Cold Merge is hot, freshly brewed coffee joined immediately with cold milk and drunk at once. The coffee goes into the glass first, the milk afterwards. No ice, no foam, no heated milk. The mixture is not meant to remain layered. It should come together in the moment the milk is poured.
The drink came about around 2006 in Cologne-Deutz, without a recipe and without a name. At the time I drank espresso from the returnable glass jars in which 500 grams of yoghurt were sold. One espresso went into the glass, then it was filled up with cold milk. The ratio was roughly one to five.
It stayed that way.
Only with time did it become clear that the order is not incidental. Cold milk underneath espresso makes a different drink. A Cold Merge that stands for a few minutes no longer tastes the way it does immediately after pouring. That brief state just after the two meet is therefore part of the drink itself.
COLD MERGE ’06
The original version consists of one freshly pulled espresso and roughly five parts cold whole milk. The espresso goes into the glass first. The milk is poured straight in so that the two mix.
Do not layer it slowly. No need to stir. Do not let it stand.
Drink immediately.
The one-to-five ratio is not a fixed law. It describes the point at which the milk is clearly present and the coffee still determines the drink.
RECIPE
1 part hot, freshly brewed coffee.
About 5 parts cold whole milk.
Coffee into the glass.
Add the milk.
Drink immediately.
No ice. No milk foam. No sugar is needed.
NOT DIRTY
At first glance Cold Merge resembles the Dirty Coffee that became known later, but it is almost its counter-idea.
With Dirty Coffee, hot espresso sits on cold milk. The layers are initially preserved; temperature and flavour change from top to bottom as you drink.
With Cold Merge, the coffee is at the bottom. The cold milk falls into it and lifts it through the glass. The separation is meant to disappear.
The decisive moment is not the layering, but the merging.
COLD MERGE ’26
Twenty years after the first version, the way the coffee for Cold Merge is prepared changes.
In 2026 the ARAMSE SOFI 72 is added. It does not make espresso, but a concentrated coffee slowly filtered through metal. This changes the character of the drink, not its idea.
Hot coffee first. Cold milk afterwards. Together immediately. Drink at once.
Cold Merge ’26 is therefore neither an improvement on Cold Merge ’06 nor a replacement. It is a second version of the same drink.
The first recipe is fixed before the first cup made this way has even been drunk:
20 g finely ground espresso coffee.
40 g hot water to wet the grounds.
Wait one minute.
Then slowly pour up to a total of 120 g water and let it pass through the SOFI.
The resulting coffee concentrate goes into the glass first. Then add about five parts cold whole milk.
Do not layer. Do not wait.
Drink immediately.
THE MOMENT
Cold Merge tastes different shortly after pouring than it does a few minutes later. This is not an unwanted change, but one of its characteristics.
Freshly brewed coffee carries volatile aromas, heat, oils and the finest particles into the cold milk. In the instant they come together, a state appears that lasts only briefly. Afterwards the mixture becomes calmer, more uniform and, to my taste, less interesting.
Cold Merge is therefore neither cold coffee nor iced coffee.
It is hot coffee that has only just become cold.
ORIGIN
Cologne-Deutz, around 2006.
One espresso.
One returnable yoghurt jar.
Cold milk.
The name came twenty years later.