Potatoes a la Landaise

Potatoes a la landaise is the name of a French potato dish. It's simple and very tasty. Here's the recipe:

3 tablespoons olive oil
2 onions finely chopped
1 cup chopped ham
6 potatoes peeled and diced
salt
pepper
3 cloves of garlic finely chopped

Heat the oil in a large frying pan with a lid.
Fry the onions and the ham until they are well browned.
Add the potatoes and season with salt and pepper.
Cook with the lid on for 20 minutes.
Stir from time to time.
When the potatoes are cooked add the garlic and mix well.
Serve warm!