Bring a large pan of salted water to the boil. Simmer the potatoes for 12-14 minutes
until tender, drain and set aside. Meanwhile, mix the oil, garlic and lemon zest and
rub all over the lamb steaks. Season.
Heat a large frying pan over a medium-high heat. Fry the lamb for 3-4 minutes on
each side. Lift out and set aside covered with a sheet of foil. Toss the potatoes into the
hot frying pan and fry for 2 minutes, stirring, until just coloured; season and take off
the heat. Set aside.
Meanwhile, in a small pan, heat the butter to foaming, add the shallot and a pinch
of salt; sauté for 5 minutes until soft. Add the peas and 1 tbsp water and cook for 3-4
minutes until piping hot. Take off the heat, crush with a masher, stir in the herbs, most
of the feta and the lemon juice. Pile the potatoes, peas and lamb onto plates and
scatter with the remaining feta.