Bring a large pot of water to the boil, add salt to season the water (a little bit salty is great, 1 tablespoon should do it)
Boil the potatoes until soft, around 30 minutes. Dry the potatoes and let them dry off.
Place potatoes on a cooking tray and using a masher, or mug, or fork – squish down the potatoes until they are halfway squashed, don’t worry about tearing but try to keep them in one piece. Let them sit for a few minutes to cool slightly and dry.
Drizzle with olive oil, season with salt and pepper.
Place in the baking tray, into the hot oven and bake until crispy and golden, approx. 30-40 minutes depending on your oven.
Remove, sprinkle with sea salt and any leftover chopped fresh herbs.