A lot of us have been in a situation where you cut open a yam, expecting its usual creamy white or yellow flesh, only to find it turning red. Have you ever wondered what causes this change in colour?

1. Preheat oven to 350°F (180°C). 2. Boil the yellow yam. 3. Add margarine to the yellow yam and crush while it is still hot. 4. Line a pie pan with the crushed yam. 5. Mix ketchup, scallion, thyme ...

The varieties exported from Jamaica in large quantities are yellow, Negro and sweet yam. The crop also has massive domestic income-earning potential, with a typical return on investment of 63 ...