A small factory in Malaysia's capital is preparing thousands of ready-to-eat halal meals, from fried rice to chicken biryani, to be shipped off to Japan for 2020's biggest sporting event.

Food firms from Muslim-majority Malaysia are expected to be big winners from a rush of Muslim travelers to Japan for the Olympic and Paralympic Games, from late July to September.

"It's a huge platform and opportunity for us," said Ahmad Husaini Hassan, boss of the MyChef company making the meals in Kuala Lumpur.