Blamish oil

Blamish oil is a quest item used in Heroes' Quest. It is made through the Herblore skill at level 25 by grinding fat, lean or thin snail from snails in Mort Myre Swamp with a sample bottle from Fidelio's General Store, then mixed together with a Harralander potion (unf). It is used to turn a normal fishing rod into an oily fishing rod. Oily fishing rods can only be used at lava fishing spots to catch lava eels. It is also rarely dropped by citizens of Canifis when using a wolfbane dagger so they do not transform into a Werewolf.

Blamish oil has "Drink" option, but when doing so causes the player to say "You know... I'd really rather not."

Dropping monsters
Blamish oil