Preheat the oven to 200 degrees celcius with convection.
Peel the potatoes and cut them into suitable pieces.
Heat the water in a saucepan until it boils, add the 30 g. Salt, baking soda and finally the potatoes.
Now cook the potatoes until tender, it should take about 10 minutes. Pour the water from the pot and let them sit for a few minutes.
Put the potatoes in a bowl. Pour the saved oil over and 1 tsp. salt and pepper to taste. Shake them well so that they become slightly dissolved and chatter on the surface.
Transfer the potatoes to a baking sheet with parchment paper and spread them out well.
Place the baking tray in the middle of the preheated oven and give them 50 – 60 minutes, turning them continuously along the way (4 -5 times) so that they become completely golden and deliciously crispy on all sides.
When done, take them out and put in a bowl. Pour the saved roasted spices and parsley over and turn around.
Serve immediately.