Heineken has acquired a minority stake in Double Dutch, a premium tonic and mixer brand.

Owned by Dutch twin sisters Raissa and Joyce de Haas, the investment of just under 10% will provide new capital for the UK-based Double Dutch brand.

The deal has seen the husband of the global brewing giant’s main shareholder Charlene de Carvalho-Heineken, Michel de Carvalho, join Double Dutch’s supervisory board. As a major shareholder of Heineken beer, he will use his global network to support the company’s growth.

Michel de Carvalho said: “This is our first family venture into tonics and Double Dutch is an exciting brand with two driven, ambitious young Dutch women entrepreneurs behind it.

“No longer a start-up brand, it has captured an 8% market share in the UK which is a testament to the founders’ hard work and tenacity. I am optimistic, despite the challenges that the current pandemic presents, that Double Dutch will continue to grow exponentially as it has done over the last three years.

“I see the growth in premium tonics continuing, with the demand for luxury soft drinks, healthier low sugar alternatives and unique mixers for exclusive variants of gin and vodka increasing, and Double Dutch fulfills all of those.”

Double Dutch’s Raissa de Haas commented: “As well as being hugely exciting commercially, the relationship is a perfect cultural fit – both businesses are Dutch, family-owned and female-driven – we couldn’t be happier.”

Founded five years ago, Double Dutch now sells over a million bottles a month in 26 countries.