Berlin-based soft drinks brand Holy has launched an adjustable flavour system, introducing a new 'Syrup Bottle' designed to let consumers control drink intensity at the point of consumption.

The product combines water with a replaceable flavour pod and uses a mechanical dosing system with five preset intensity levels, ranging from light to strong. Users can adjust flavour strength via a dial on the bottle, allowing the same drink to be tailored throughout the day without dilution or remixing.

Holy said the system addresses a long-standing limitation in soft drinks, where flavour intensity is typically fixed during production despite differing consumer preferences and occasions.

Holy will debut ten sugar-free flavours at launch, including Green Apple, Elderflower Lime, Mango, Cola Popsicle, Tangerine Yuzu and Pomegranate. The company said the formulations are designed to remain consistent across all five intensity settings.

According to the company, the main barrier to adjustable soft drinks has been technological rather than formulation-related. Holy spent three years developing the dosing mechanism, producing six prototype generations before finalising a system capable of delivering consistent, controlled flavour mixing in a portable format. Several components are currently under patent application.

Fredi Jost, co-founder of Holy, said: “The drinks industry has spent decades optimising flavour. What was missing was a system that makes it controllable.”

The launch also introduces a shift in format, moving away from ready-mixed beverages towards a system based on a reusable bottle and interchangeable flavour pods. Flavour is created at the moment of use rather than during manufacturing and distribution.

By separating water and flavour, the system reduces packaging, weight and transport volume, with each pod designed to produce several litres of drink. Holy said these efficiencies are a result of the product design rather than a primary sustainability claim.

The Syrup Bottle will be available as part of a starter bundle including ten flavour pods, providing approximately 25 litres of drink at a mid-level setting. The bundle is set to launch on Sunday 19 April, priced at £44.99 via the company’s UK website.