Pre-heat the oven to 170 °C, on fan bake.
Add the wai (water), wanira (vanilla), tote (salt) and pata (butter) to a pot. Bring to a gentle simmer over medium heat. Remove it from the heat.
Sift the puehu parāoa (flour) directly in to the hot mixture. Give it a really good stir and set it back on to low to medium heat.
Cook the mixture for 3 minutes as you continue to stir. You will notice a light film of mixture forming on the bottom of the pot - that is what we want. Tip it in to a large bowl.
Push the mixture up the sides of the bowl and leave to cool for 10 minutes. As it cools, add the hēki (eggs) to another bowl and whip well.
Slowly add the hēki (eggs) in to the mixture a quarter at a time, mixing well after each addition. Mix it until a smooth paste forms. Keep adding the hēki (egg) and mixing it until a V shape forms when you pull the spatula out of the mix.
Prepare two large baking trays with baking paper. Spray them with cold water or brush it on with a pastry brush.
Add the prepared mixture to a piping bag with a small round nozzle. Pipe around 12 choux buns on to each tray. If you don't have a piping bag you can add the mixture with a teaspoon. Make sure there is plenty of room for the buns to grow.
If you have piped them, dip your finger in some water and smoosh the peaks down so they don't get brunt in the oven.
Bake them for 20 minutes. Then open the oven and stab through both sides of each bun with a knife. This releases steam and helps them go crisp.Bake them in the oven for a further 15 minutes. Remove from the oven and cool.