A Fat trap also known as a Grease trap, are suitable to collect any cooled kitchen fat you produce in the home.

This is "me", Rob Abdul in the picture below modeling a fat trap to illustrate the importance of using a fat trap.  I must add I don't know how to cook; it is a case of can't cook wont cook.  Anything you can microwave, that me!

If you are a Severn Trent Water customer order their free fat tap online:
http://www.stwater.co.uk/server.php?show=ConForm.60