Open thread: 'redefine nothing' – what are your tips for reducing food waste?

Radish tops can be used in soups and pretty much any sad vegetable or fruit can be rescued by pureeing - submit your tips for 'zero waste' cooking

In the never-ending string of "days attached to apparent causes", Friday is Food Revolution Day, pioneered by the high-profile happy chappy Jamie Oliver, friend to all but sugar.

Youth Food Movement Australia, which organises volunteer-run food projects across the country, says the amount of food thrown out by one household annually equates to one in five bags and costs $1,000 a year.