Fondant Potatoes (Melting potatoes)

Bahan-bahan (8 porsi)

• 4 x 400g/14 oz large floury potatoes (, peeled (Aus: Sebago (dirt brushed), US: Russet, UK: King Edward))
• 3/4 tsp cooking salt / kosher salt
• 1/2 tsp black pepper
• 2 tbsp extra virgin olive oil
• 3 tbsp / 50g unsalted butter (, cut into 1cm / 1/2" cubes)
• 6 thyme sprigs ((sub 1/2 tsp dried thyme))
• 1 cup chicken stock / broth (, low sodium (or vegetable))