Grain was jointly founded in 2013 by four co-founders — Yong Yi Sung, Ernest Sim, Gao Rifeng, and Isaac Tan — and initially launched as a personalized meal subscription service.

This round included existing investors DMP and Ivan Lee while also gaining the support of Wee Teng Wen of the Lo & Behold Group.

In the Series B funding round led by Thailand's Singha Ventures, Grain raised US$10 million to improve existing infrastructure and expand to other Asian cities, beginning with Bangkok.

[11] Yong Yi Sung, Grain's CEO, released a statement of apology, explaining that when the issue was discovered, the dish was removed to avoid further harm.

[11] To rectify the issue, Grain worked closely with the NEA, the Ministry of Health, and the Agri-Food and Veterinary Authority of Singapore,[11] and as of August 2019, it has regained the "A" grade for food hygiene.