Grilled Swordfish with Lemon Butter

Why This Grilled Swordfish with Lemon Butter Works

On the grill, the swordfish cooks fast over steady medium-high heat, so the outside browns while the inside stays moist. The olive oil on the surface forms a thin coat that keeps the fish from drying out and sticking to the grates. As the heat moves in, the flesh firms up and turns opaque, and the flakes start to separate but still hold together, which is when the steaks are done. Leaving them on much longer would push out the juices and make the fish tough.

In the saucepan, the butter slowly melts and loosens up, so it can soak up the lemon juice, zest, and garlic. While it stays warm, the garlic softens in the hot butter and loses its harsh bite. Once the grilled swordfish comes off the heat, the warm lemon butter runs over the surface and into the small gaps between the flakes. The melted fat coats the fish so it stays tender, and the lemon cuts through the richness instead of letting the dish feel heavy.

Mistakes To Avoid

Letting the swordfish cook too long on the grill can turn the steaks tough and dry. The outside starts to look great with grill marks, but the inside loses moisture and becomes chewy instead of flaky and moist.

Putting the grill on very high heat can burn the outside before the center cooks through. The surface gets dark and hard while the middle stays slightly raw and glossy, so the fish ends up uneven and not pleasant to eat.

Skipping the oil on the fish before grilling often leads to sticking. The bare fish welds itself to the grates, tears when it is flipped, and loses a lot of its surface, so the steaks look ragged and dry out faster.

Letting the lemon butter boil hard instead of staying warm over low heat can make the sauce separate. The milk solids in the butter brown too much, the texture turns greasy and broken, and it coats the fish in oily patches instead of a smooth, silky layer.