Willibert Krueger

Willibert Krueger owns 50% of consumer goods company Krueger GmbH & Co. KG, which generates around $2 billion in annual revenue.

In 1971, he took over the annex of his parents' small food wholesale business and began to manufacture instant tea.

His "granulated" tea concept proved a hit, with 10 million packets produced in 1976.

In Germany, Krueger is known for a wide range of "instant" products including milk powder, powdered sweetener and coffee capsules.

The company also manufactures and markets health-and-wellness products including non-prescription medicines, vitamins and pharmaceutical cosmetics.