Flip salmon and cook skin side down for another 3 minutes, then add to the plate with the lemon and tent loosely with foil.
5
In a coated cast-iron skillet or heavy-bottomed frying pan, add the olive oil and heat over medium high heat until shimmering. Add salmon (skin side up) and halved lemon and cook for about 4 minutes, or until salmon is golden brown and can easily move around the pan. Remove lemon from the pan and set aside on a plate. Flip salmon and cook skin side down for another 3 minutes, then add to the plate with the lemon and tent loosely with foil.