Turn fish over, cook for another 40 seconds–1 minute. Remove fish and asparagus from pan, and with skillet still off the heat, add a squeeze of lemon juice to it. Put skillet down on an unheated burner, and use a wooden spoon to rout any little brown bits from the pan’s bottom into the tiny bit of liquid. Add a tablespoon or two of white wine or a bit of lemon juice to create a small amount of sauce.