Leimin Duong, 28, Australia

Leimin Duong established Zeven Lemon Beerworks with no prior industry experience, and is on a mission to bring fresh perspective into the beer world, with fruity beers that "defy convention".

The company's strawberry-flavoured brew has a wide distribution network across Australia.

Her advice to future entrepreneurs: "Have the courage to call things as they are and then act on it."

You can find our 30 entrepreneurs talking about their experiences in under 30 seconds each on our 30under30 special report .