How long could you manage on £3 of food a day?
It wants people to experience what it is like for people facing food insecurity.
How much could you get by on with just £3 worth of food a day?
Lisa Vincent, who runs Eat Social, an organisation that supports people facing food insecurity, is asking people to try living on only £3 of food a day.
A sandwich shop is challenging people to get by on just £3 of food a day in order to draw attention to the rising number of people experiencing food insecurity.
Eat Social, which runs a café on Wensum Street in Norwich, is launching the campaign in October and inviting people to sign up for the two-day challenge.
The move comes as the latest figures from the Food Foundation show that one in six families with children are facing food insecurity.
Lisa Vincent, who founded the community interest company after hearing accounts of children developing illnesses linked to malnutrition, said the situation is "unacceptable" and hopes the challenge will increase awareness.
Lisa Vincent opened The Sandwich Shop to help raise funds to support families in need with community meals.
She said: "Food insecurity is not just about hunger but also poor nutrition in diets, the anxiety of not knowing where your next meal is coming from.
"Living off £3 of food a day is going to be very boring, bland and probably not very nutritious. It is just about satiating hunger in the immediate moment."
Vincent based the challenge on research showing that the lowest-income families are feeding themselves on £25 a week per person, which works out at about £3 a day.
"We want to raise more awareness of this and for people to understand, this is tough," she said.
Eat Social's sandwich shop venture began three months ago and puts 100% of its profits into its community meals programme.
Those taking part in the £3-a-day challenge are also being asked to donate the extra money they would otherwise spend on food to this project.
Vincent was prompted to launch the project after feeling "disgusted" by reports of malnutrition affecting primary school pupils in West Earlham, Norwich, where a headteacher reported children with bowed legs.
She said: "Poor nutrition in childhood affects brain development and physical development, and you can't get that back.
"Once that development's been hampered, you could have a brilliant diet, but you are not getting that back."
Food prices remain a concern, and there are fears they could rise after this summer's extreme weather led to poor crop yields and further climate changes are predicted.
The government has previously said it recognises the level of household food insecurity in the UK is "unacceptable", external, and that it is taking action to bring down the prices of essentials, improve access to healthy food and has expanded free school meals.
Hannah Worsley, project manager for Norwich Food Bank, said people who have already changed their lifestyles since the cost-of-living crisis began are still struggling to make ends meet.
She said: "Several years ago the problem people were facing was a one-off thing, like losing a job, which was then resolved and people would be back on their feet able to cope again.
"Now, we're seeing people who've made cuts maybe eating less or not using certain facilities like their cooker or their washing machine and it's still not enough to live on."
She hopes the £3-a-day challenge will help people empathise with those who face a daily struggle to afford food.