Singapore-based Golden Duck makes snacks and are most well-known for their salted egg yolk flavoured potato crisps and fish skin. They are up against some very staunch competition in their home country but has an advantage here with its link to Malaysia's Mamee-Double Decker. Golden Duck's co-founder and CEO Jonathan Shen shares what it has cost to get to where it is today and the challenges in marketing a snack that some might see as bougie.