Slice your potatoes really thinly (I use the food processor slicey attachment)
Slice your onions thinly too
Crush or chop any garlic if you fancy adding this
Lightly grease a baking dish with olive oil and put your first layer of potatoes in
Cover with onions, and then more potatoes
Keep going in layers like this, every couple of layers or so adding a little drizzle of olive oil, some salt and pepper and a sprinkle of oregano
Tuck some basil leaves under the last layer of potatoes – a bay leaf or two throughout wouldn’t go amiss either
Cover the last layer of potatoes with the last of the onion, a couple of slices of tomato (cherry tomatoes cut in half are good) and give it a drizzle with olive all and a big splosh of white wine. Season and put in the oven at 200˚c for 45 minutes or an hour. They might need a bit of nudging half way through – and add more wine, oil or a dash of water if they are looking dry at all!
These potatoes are delicious – maybe of note that I always put considerably more wine in than the tablespoon recommended in the book