Get a large frying pan on ninja-hot. Fill it with oil to a depth of 2mm.

Salt the steak on both sides and fry (carefully!). Turn every 15 seconds for 2 and a half minutes. Leave to rest on a rack over a plate.

Take the pan off the heat and discard the oil, but don't wipe it out. Pour 120ml olive oil into the pan, and add the garlic, zest and rosemary. Allow to infuse for 5 minutes.

Add the lemon juice and sieve into a jug, adding the drained steak juices. Slice the steak into finger-shaped pieces, season well and ladle over half the dressing.

Toss the salad with the remaining dressing and arrange on a plate with the steak slices, some parmesan and a few flakes of sea salt.