The grate has {HEAD ~ ridges} and {TAIL ~ valleys} to distribute heat evenly and to radiate heat to the food from several directions 
The grate has { HEAD ~ ridges } and { TAIL ~ valleys } to distribute heat evenly and to radiate heat to the food from several directions
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH