Thermador PRD48JDSGU Use And Care Manual page 36

Griddle Grease Tray
Grease Tray Grease Tray Grease Tray
Clean the tray after every use. When removing the tray, use
care when tipping it so that the contents do not spill. The
griddle plate and its grease trough are dishwasher safe.
After cooling, pour the grease into a grease-resistant
container for disposal.
English 32
Figure 27: Grease Tray
Cooking on the Griddle
1. Turn the knob to the appropriate cooking temperature
to preheat the griddle.
2. Preheat until the griddle light goes off.
Add butter, margarine, oil or shortening if desired.