Singapore, Sept. 30 -- In more than three decades of running a traditional bun-making business, Mr Ang He Siong, 62, never imagined that he would one day sell bao, or steamed buns, stuffed with plant-based meat.

But that's what his company, Lim Kee Food Manufacturing, will soon market as part of its new vegan product range for health-conscious customers.

"We must refine our products," said Mr Ang's son, Khim Wee, 34, Lim Kee's head of business development, "instead of just sticking to past successful products, as people's tastes and preferences change."

Lim Kee worked with Enterprise Singapore (ESG), which helped the firm build its vegan processing line and apply for vegan certification.

Its vegan offerings, launched in January last...