Dice the potatoes into 2cm cubes and add to a mixing bowl.
Add to the garlic to the bowl.
Add the oil, season with salt and mix everything together.
Heat a frying pan until hot and then saute the potatoes until golden brown on most sides.
Transfer to a baking tray.
Scatter chopped rosemary over the potatoes.
Bake in the oven for 10-15 minutes until crispy but cooked- you can check this by squashing one with a spoon.