Food can stick when oil is added before the wok has been preheated as recommended. A wok may seem warm, but appearance alone does not confirm that the preheating step was completed. Residual water presents a separate problem: the cited guidance says to cook off water drops before adding oil because the oil may splatter.
Which sequence matters?
Before adding oil, check three points:
- The wok has been preheated. The cited guidance specifically recommends preheating before oil to reduce sticking.
- Water drops have been cooked off. Any remaining water should not meet the oil because it can cause splatter.
- The heat has been moderated if necessary. After preheating, the heat can be reduced and the wok allowed to cool a little before oil is added.
This means preheating is a controlled step, not simply a race to the highest heat. A brief cooling period before adding oil does not undo the preheat; it is part of the recommended heat-control sequence.
How can a hot-looking wok still present a problem?
A visible sign of heat does not establish when the wok was heated or whether the recommended sequence was followed. Oil added too early may therefore enter the wok before the preheat the sticking-control method assumes.
Water should not be confused with that explanation. The cited guidance connects leftover water with splatter, while its direct sticking advice concerns preheating before oil.
What still needs confirmation?
The cited guidance does not confirm a universal preheating time, heat setting, oil quantity, temperature target, or visual readiness cue. Those operating details should be checked against the documentation for the specific wok and heat source rather than guessed from appearance.
It also does not establish that inadequate preheating is the only cause of sticking. If sticking continues, the sequence is one point to verify—not a complete diagnosis of the cooking setup.