Remove the lamb from the marinade (keep the marinade for later use).
Heat up the frying pan over high heat. Add butter and melt.
Add lamb steaks and grill them for 4 minutes.
Flip the lamb over and grill another side for additional 4 minutes.
Transfer the steaks to a clean kitchen towel and remove excessive oil.
Pour the marinade in the same frying pan and add a pinch of sea salt and bring to boil.
Simmer until the sauce is reduced to one third.