You will need
Adjust oven rack to middle position. Preheat the oven to 190°C.
Peel the potatoes. Slice on the diagonal at 5mm intervals but not all the way through.
Mash the butter and Liquid Stock together.
Fan out the cut potatoes as wide as possible and spread butter between each space.
Oil an ovenproof dish with a little olive oil. Place potatoes snugly into the dish. Season with Potato Spice.
Drizzle with olive oil.
Roast for ± 40 minutes.