[lambda]

The article mentions that it was provided by SciDev.net.

Looking there you find the original article, and it has the correction to the right temperature: https://www.scidev.net/global/supported-content/rwandan-scie...

[culi]

> The team looked for a fermenting agent that could remain reactive in substances with a temperature of up to 37 degrees Celsius* and alcohol of the recommended 16 per cent per volume.

> This article was edited on 29/01 to correct the temperature for fermenting to 37 degrees Celsius.