| Always preheat oven before using unless chart or recipe indicates otherwise. |
| After checking for the ash pan, an operator started the preheat cycle for the afterburn chamber. |
| Solar collectors can preheat feedstock, and solar photovoltaic cells can produce the electricity for the pumps. |
| If you are griddling, preheat your ridged grill pan on high for five minutes. |
| For the mousseline preheat the oven to 300 degrees and brush the inside of six ramekins with butter. |
| For the custard, preheat the oven to 300 degrees and line a shallow baking pan with plastic wrap. |
