(Reuters) - British tonic maker Fevertree Drinks on Thursday reiterated its forecast for the year ahead of the key summer trading period as more customers spend on cocktails like mojitos and margaritas.

The company, which was founded in 2003, said it continued to be the biggest contributor to growth in the carbonated mixer category in the U.S., while the UK saw strong demand for its mixers for rum, vodka and other spirit drinks.

(Reporting by Radhika Anilkumar in Bengaluru; Editing by Nivedita Bhattacharjee)