Kate Thal, and her husband Jude Liddle, who own the Green & Blue stores, will pick one participant who will train and work for their business, before returning to work as a sommelier in South Africa.
The initiative was set up after it became clear that there were not enough trained sommeliers working in South Africa where wine tourism is becoming big business.
For six months, the trainee will work alongside South-African born Thal, who will teach them about tasting and buying wine for the shop. During the second half of the year they will work at one of Gordon Ramsay's restaurants.
Green & Blue's second shop - in Clapham - opened on July 10. The store in Bedford Road has a similar format to the flagship store in East Dulwich.