Scientists and yam breeders are trialing ways to replace these sticks through agroforestry, introducing living supports that can also improve the soil and provide other benefits to farmers.

Small yams can be cooked in their skins, but larger ones should be peeled, washed and blanched for 10-20 minutes in boiling salted water before being used. Yams can be used in the same way as ...

This unexpected colour change can be puzzling, but it has a simple scientific explanation. When a yam is sliced, its cells break open, exposing natural compounds to oxygen in the air. Some yams ...