Place the cut potato in a pot with enough water to cover the potatoes, add 1 tsp of salt into the water
Boil for 20-25 mins until cooked
Drain it in a colander and shake vigorously in the colander, so the edges of the potatoes are smashed a bit
Preheat oven to 220C
Add oil to a flat tray and place it in the heated oven for 2 mins until the oil is heated ( Be careful as the oil is hot and it can burn you) Take the tray out of the oven and place the potatoes carefully on the heated oil and bake it in the oven for 40 mins, turn the potatoes halfway through cooking to get an even brown colour all around the potatoes.20 mins of cooking add the rosemary sprig and garlic and continue cooking
Once the potatoes are brown in colour, take off the oven and enjoy.