Health-focused Nestle will always be home to KitKat: Chairman - CNBC

Brabeck-Letmathe shrugged off concerns about a health and nutrition-focused Nestle retaining sugar-laden labels such as KitKat, Nesquik and Smarties.

"The KitKat is a perfect example. There is nothing wrong with a nice KitKat. Now should we have products with 60 percent sugar and palm oil? No we should get rid of it. Those products have nothing to do with a nutrition and wellness company and we're eliminating those products one after another," he said.

Brabeck-Letmathe sounded like a personal trainer putting Nestle's less-healthy products on a diet: Shape up or ship out.

"Our priority is to adapt them, reformulate them by taking out sugar, salt and sodium, make them nutritionally good. If we can't do that, we should get rid of them. But KitKat will stay with us for many, many years," he told CNBC.

Brabeck-Letmathe also revealed that his sweet tooth stretched to many corners of the Nestle empire when asked about his biggest regret: "When I started with Nestle I was an ice cream salesman. We weren't able on our own to make ice cream a more successful segment. This is one of my emotional regrets."