Nairobi, June 10 -- Many people drop a few ice cubes into their favourite drink without giving much thought to how they are manufactured. Yet behind the ice cubes used in cooling whiskies or juice are entrepreneurs earning millions of shillings. They have found a ready market in homes, pubs and restaurants, hospitals, fish markets, and even in wellness centres and supermarkets.

Gladys Anyango is among the Kenyans in this business.

The founder of Glad-Ice Enterprise says she stumbled on an opportunity; what many people take for granted.

She was in air ticketing and business administration and built her career managing supply chains and vendor relationships in Nairobi. Those skills would later prove valuable in identifying a market gap t...