Yes, a hash brown sandwich!
Grate the potato and squeeze the gratings in a very clean tea towel to remove the water - you want them very dry. Heat a pan of boiling water and very quicky black the gratings, then set aside until cook enough to handle.
Season then shape them into four patties the same size as a large cooking cutter, then heat the oil and deep fry until golden and crispy.
Whip the cream cheese until soft. Place one hash brown at the bottom of the cookie cutter, cover with cheese, avocado, smoked salmon and a fried egg. Place another hash brown on top. Eat.