The Anzac biscuits we eat now are not greatly changed from the originals, although probably much tastier. The early ones were hard tack, solid things chosen for their long-lasting, non-spoiling abilities.
The key to the biscuits is in their simplicity.
"It's an easy, simple biscuit," Wayne DellaBarca, owner and chef at Masterton eatery Massa, said.
"You can't really go wrong - they're so straightforward, you couldn't really get any easier."
However, there are secrets, tips and tricks to make what some consider the perfect biscuit.
Margie Lawton, the co-owner of Masterton's Taste Cafe, said it was all about the texture.
"It's really important to have the oven temperature just right - I like them crispy, not soft," she said.
"The golden syrup content is important, too."
Frank Bain, who learned the original recipe from his father, who fought in World War I, said the recipe had changed a bit since then but was "basically the same".
"Back then it was just flour, sugar, rolled oats and coconut with some water to mix it up with," he said.
"Now it's the same, except for butter, golden syrup and baking soda."
The most popular recipe, it now seems, comes from the Edmonds Cookery Book.
Masterton's Marjorie Simmonds, though, reckons she has the ideal recipe, which she took from a television cooking book "years ago".
"I've been doing it for as long as I remember, and it's worked a treat," she said.
Mrs Simmond's recipe:
125g flour
150g sugar
1 cup rolled oats
1 cup coconut
100g butter
1.5 tablespoons golden syrup
1 teaspoon baking soda
4 teaspoons hot water
1 - mix together dry ingredients in a large bowl
2 - melt butter and golden syrup in a small saucepan
3 - dissolve baking soda in hot water in a small jug, add to golden syrup mix
4 - make a well in the centre of the dry mix and mix everything together
5 - place in small spoonfuls on a paper or grease tray
6 - bake for 10 minutes at 180C until slightly brown
7 - when cooked, slide on to newspaper, which will drain the excess grease