hot (spicy) / pungent / (of chili pepper, raw onions etc) to sting / to burn
辣
=
束
+
辛
:
Lancelot (l) wants to concoct a hot and spicy (辣) broth in the ashram's bathroom (a4), so he prepares a bundle of firewood (束) and puts a kettle on it. He fills the kettle with kimchi (辛) to make a hot and spicy soup.