煮
シャ, に.る, に, に.える, に.やす
boil, cook
JLPT1 G7 S12 F1565
As per
者
# (pile of brushwood/firewood) +
火
fire → *cook*; *boil*. Like
暑
,
煮
was devised to replace
者
after
者
acquired its borrowed meaning.
[Full Kanji Etymology List]