When cooking on a hob use just enough water to boil your food, and don’t have the flames licking up the side of the saucepan.
Wrth goginio ar yr hob, peidiwch â defnyddio mwy o ddŵr nag sydd angen i ferwi eich bwyd, a pheidiwch â gadael i’r fflamau godi o amgylch y sosban.