Add the oil and butter to a large pan over medium heat
Add the onion and fry until it begins to soften
Add the garlic and fry for another minute until fragrant
Add the Panko crumbs and fry until the crumbs are golden brown
Remove the pan from the heat and allow to cool.
In another dry frying pan, add the almond slivers and toast over medium heat until golden brown
In a medium-size bowl add the toasted Panko crumbs, sage, lemon zest and eggs.
Roughly chop the almonds and then add them to the bowl. Mix well to work the eggs through and combine
Lay the pork skin side up and using a craft knife or a very sharp knife score the skin with straight lines in 1 cm metre intervals
Ensure that you cut all the way through the skin but not into the meat layer
Flip the pork over and season the entire surface of the meat with salt and pepper
Spoon the stuffing onto the surface and work it into an even layer leaving 1 cm border around the meat
Starting from the loin end, gently roll the roast up until the two ends meet
Place the roll with the seam side down then tie the belly with butcher’s string, about 6 pieces should do it
Pat the skin dry with a piece of kitchen towel and then pop the roast into the fridge uncovered overnight to dry out the skin
This will ensure you have the crispiest of crackling
The Next Day
Remove the roast from the fridge at least 2 hours before roasting, so that it can come to room temperature
Roast Potatoes
Put the potatoes into a large pot of salted water over high heat
Parboil the potatoes until the exterior is soft but they are still firm
Drain the potatoes and allow to cool until you can handle them
Using a fork, score the potatoes all over to rough up the exterior surface
The rough surface will ensure the potatoes get super crisp in the oven
Pour enough oil into a roasting pan so there is a 1 cm layer
The potatoes are going to go into the oven on a separate rack, preferably underneath the roast when the roast is 1 hour into its cooking time, so set your oven racks up accordingly
Preheat the oven to 230 ºC, or as hot as it will go
If you have a convection oven then use the convection setting
Gently pull the scores on the skin apart and pack them with sea salt, then season the rest of the roll and rub the salt into the skin
Brush the entire roll with oil and pop it onto a rack and into the oven for 30 minutes
After 30 minutes reduce the heat to 170 ºC
Roast the pork for 1 ½ hours before checking the internal temperature
You are aiming for 57-60 ºC
The roast will continue cooking when you take it out of the oven by at least another 5 ºC leaving you at a perfect 65 ºC internal temperature
Remember to put the potatoes into the oven 1 hour into the pork roast cook time
Flip the potatoes occasionally to ensure even browning
When the roast has hit the desired internal temperature remove it from the oven and allow to rest for at least 30 minutes
Slice 1.5 cm slices of pork and serve with crispy, golden potatoes