For the Steak Slice recipe, marinating the steak after cooking sounds very interesting. Would it work with a shoulder of lamb?
For Nigella's Steak Slice With Lemon And Thyme (from NIGELLA EXPRESS) the steak is given a post-grilling bath in a marinade of olive oil, garlic, thyme and lemon juice. This is a very time-efficient and delicious way of cooking steak as the warm meat absorbs these flavours while it is resting.
The flavours of the marinade go well with lamb, but as a leg of lamb is such a large piece of meat the marinade will not have much effect on the overall flavour of the lamb. However if you were to grill or griddle lamb leg steaks, or cutlets, then the technique and marinade would be very effective. The marinade would also be good with pork loin or shoulder steaks or pork chops.