1. Preheat both sides of the Entertaining Grill to 220ºC.
2. Place the corn in a large pan of salted boiling water.
3. Simmer for 3 to 4 minutes before draining and running under cold water.
4. Pat the corn dry and place in a bowl with the olive oil and cumin seeds. Liberally coat with the mixture before placing on the grill plate.
5. Cook for 30 minutes, turning regularly until tender and golden brown.