Here's an uncomfortable fact: the average household throws out roughly a third of the food it buys. In Hong Kong, that works out to around 71 kilograms per person per year — and roughly HK$1,700 of food, dollar for dollar, ending up in the bin.

The good news is that most household food waste is driven by a small number of fixable habits. You don't need a composter, a vacuum sealer, or a degree in sustainability. You need twelve small changes, and they'll save you money the same week you start.

Every single day in Hong Kong, about 3,300 tonnes of food ends up in landfill. That's the weight of more than 200 double-decker buses. It's also the largest single category of municipal solid waste the city produces — more than plastic, more than paper, more than glass.