9 oz yukon gold potatoes or russet potatoes, scrubbed .
salt (for water, plus an extra pinch) .
2 tbsps sliced cilantro .
3 tbsps grapeseed oil or canola oil .
1 small shallot, minced (about 2 tsps) .
1 tbsp butter .
1 tsp sherry wine vinegar (to taste) .
4 oz montasio cheese, grated on the large holes of a box grater .
1 small onion, sliced .
grated nutmeg
Directions
Step #1 Put the potatoes into a pot, cover with salted water & cook this until fork tender,45 to 50 mins.
Step #2 Drain potatoes & set aside to let cool slightly.
Step #3 Meanwhile, add onions & cook this until translucent & tender, melt the butter in an 8-inch nonstick or cast iron skillet over med-heat/flame, 6 to 8 mins.
Step #4 Peel the still-warm potatoes & crush them carefully into small pieces with a fork in a medium mixing bowl.
Step #5 Add the onions, salt, cheese, & nutmeg to the bowl & mix carefully; do not overmix.
Step #6 Wipe out skillet.
Step #7 If using nonstick skillet, heat 1 tbsp of the oil in the pan until hot.
Step #8 If using cast iron, heat the pan until hot but not smoking, then add 1 tbsp oil.
Step #9 Add the potato mixture in an even layer.
Step #10 Let the mixture cook on one side until golden brown, 3 to 4 mins.
Step #11 Run a spatula or knife around the edge & underneath the frico to loosen & give the skillet a shake to loosen frico from the bottom of the pan.
Step #12 Place a plate over the pan & quickly & carefully invert the frico onto the plate.
Step #13 Using a spatula, browned side up, push the frico, back into the skillet & smooth top if necessary.
Step #14 Let the frico brown on the botton side, another 3 to 4 mins.
Step #15 Loosen sides & bottom of frico again & slide onto a serving plate or cutting board.
Step #16 Set aside to cool slightly & set up.
Step #17 The frico will firm up as it cools.
Step #18 Cut into wedges.
Step #19 Mix together the remaininng oil, & salt to taste, cilantro, shallots & sherry vimegar, Serve with frico.