Heat the oven to 200°C/Gas 6. Scrub the potatoes well and dry thoroughly. Prick lightly, coat in olive oil, and roll in salt and pepper.
Place the potatoes on the rack in the centre of the oven and bake for 1½ to 2 hours, until soft to the touch. (If you can hear them softly whistle, they’re perfect.)
Fry the bacon in a non-stick fry pan until crisp, drain well on paper towel, a