First, cut your potatoes into whichever shape/size you desire. Just make sure to cut them all about the same size so they cook evenly.

Put the potatoes in a pot with the water and bring to a boil. Add the salt and baking soda and cook for 10 minutes.

Preheat oven to 400F

Drain the potatoes, cover with olive oil, put the cover back on and shake gently to cover all the potatoes in oil. Transfer to a baking sheet lined with parchment paper, season and bake for 20 minutes. Flip them over and season them with salt/pepper/minced garlic/etc. Cook for another ~30minutes until crispy