For five days next week Penny de Jongh will go without her daily flat white.
But she says it will be worth it to help the millions of women and girls around the world who are forced into prostitution and slavery.
Mrs de Jongh is taking part in Live Below The Line, a five-day challenge in which participants eat food worth no more than $2.25 per day. This figure is the New Zealand equivalent of the global extreme poverty line.
Mrs de Jongh is collecting sponsors for her challenge, with the money she raises going towards TEAR Fund's work in southeast Asia, helping free women and children trapped in sexual exploitation.
TEAR Fund estimates about 21 million people around the world are trapped in slavery.