Mix the flour, salt, sugar and yeast in a bowl. Add water, mix and knead into a soft, smooth dough.
To shape the dough
Divide the dough into 6 portions, shape into rolls (each approx. 30 cm long). Trim approx. 3 cm of dough from each roll, set aside. Starting from the middle, twist each roll twice, leaving a hole of approx. 3 cm. Shape the reserved pieces of dough into balls and place over the holes. Transfer the bunnies to a tray lined with baking paper. Cover and leave to rise for approx. 1 hr.
Combine the water and baking soda and use it to brush the bunnies, sprinkle with salt.
Approx. 20 mins. in the centre of an oven preheated to 220°C. Remove the bunnies from the oven, allow to cool a little, leave to cool completely on a rack.