When you turn off a gas stove, the flame on the burner is extinguished, but there will still be residual heat in the burner and surrounding metal components. This residual heat is a natural consequence of the burner being hot just before it was turned off.
The amount of residual heat can vary depending on the type of stove, the intensity of the flame before turning it off, and how long the stove was in use. Generally, the burner can remain hot for several minutes after being turned off.
If you try to put food on the burner too soon after turning it off, there is a possibility that the residual heat could re-ignite any flammable substances near the burner. It's important to exercise caution and give the stove some time to cool down before placing any food or flammable items on or near the burner.
To avoid accidents or burns, it's best to wait for a few minutes to allow the stove to cool down before using it again for cooking or placing any heat-sensitive items on or near the burner. If you have any doubts about the residual heat, you can also use a heat-resistant glove or a thermometer to check the temperature of the burner before touching or placing anything on it. Safety should always be a priority when dealing with hot appliances.