Naturally, anything that tastes good.
Via WallStreet Journal:
A panel of British lawmakers called for the introduction of a 20% tax on sugar-sweetened drinks, adding to mounting pressure on the U.K. government to introduce a levy on high sugar-content foods to help stop the spread of childhood obesity.
The cross-party panel made the recommendation in a report published on Monday. It comes after Public Health England, the state body tasked with improving health in the country, issued a similar recommendation last month based on the impact of such measures in other countries.