Householders are to be encouraged to throw away less waste food in a bid to save both money and the environment.
The assembly government says a typical Welsh family wastes around £50 a month buying food that ends up in the bin.
It is part of a new waste strategy to end a "throwaway society" and help reach a new target to recycle 70% of waste in Wales by 2025.
The proposals include rewarding those who recycle.
Environment Minister Jane Davidson also set out what householders, businesses and local authorities will need to do for Wales to become a "zero waste nation" by 2050.
She said she hoped to highlight the fact that waste does not only damage the environment, it can also be bad for people's finances.
"We must change our attitude towards waste because we cannot continue as a "throwaway" society sending our rubbish to landfill," she said.
"Reducing the amount of waste we produce is at the heart of this new strategy. My vision is to see all of us spending less of our hard earned money on unwanted food and goods and as a result producing less waste.
"Reducing the amount of waste we produce will then result in having to spend less money on waste management."
Around 90% of everything people buy has become waste within six months, according to the assembly government.
It said that by managing waste "sustainably" and making sure that people recycle at least 70% of their waste by 2025, Wales' ecological footprint - the size of our impact on the planet - will be reduced by 27%.
It said Wales is currently the only country in the UK where every local council offers a separate food or food/green waste collection.
It wants to extend this to every home in Wales and has committed £34m between 2009 and 2011 to help achieve this.
First Minister Carwyn Jones said: "We must all make changes. Adopting a more sustainable approach to how we deal with our waste will bring new investment and sustainable jobs to Wales."
The assembly government says Wales is the only country in the UK to introduce legislation on statutory recycling and composting targets for local authorities.
Earlier this month, Ms Davidson announced that a 7p charge for a plastic carrier bag is to be introduced in stores in Wales, probably from spring 2011.