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