Warren Buffett’s personal affinity for the companies in his portfolio is often mixed with the harder-headed business decisions made by him or his managers. The Berkshire Hathaway chair appears to genuinely enjoy the taste of Cherry Coke; he also appreciates Coca-Cola’s returns. When he first bought a 10 per cent stake 33 years ago, Buffett praised the “superbly managed, high-return banking operation”, but the bank also reflected Buffett’s own homespun charm.