Sieve

The RuneScape Wiki also has an article on: rsw:Sieve

Sieve
Released							19 July 2005 (Update)
Members							Yes
Quest item							No
Properties
Tradeable							No
Equipable							No
Stackable							No
Destroy							Drop
Examine							It's a sieve.
Values
Value							10 coins
High alch							6 coins
Low alch							4 coins
Weight							0.001 kg
Advanced data
Item ID							6097

Sieves are used to make impling jars. When players use anchovies with a pestle and mortar, they create anchovy paste. Once the player obtains eight, and uses them on a sieve, anchovy oil is created.

Players can get sieves by talking to the chemist in Rimmington about impling jars. One can also be obtained in exchange for a rotten apple by talking to Elena during Mourning's End Part I.