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Written by Jamie Purviance, author of Weber’s Way to Grill: The Step-by-Step Guide to Expert Grilling, has a few tips for managing the temperature of your braai and the braai air vent holes.
Basically the top vents should be open all the time, the only time you should have them half open is if you are having a lot of flare ups and need to reduce the amount of air getting to the burning coals.
If you close the vents completely you will only end keeping up the smoke in and get a sooty flavour on your food, so keep them open and let the smoke get out.
More: Braai Recipes | Braai Cooking Tips
In what position should the braai air vent holes be?,
