Here’s where the magic happens. Start with a preheated grill—medium-high heat (around 400-450°F). Oil the grates well, then oil the salmon skin itself. Place the fillet skin-side down, and do not touch it for at least 4-6 minutes.
Resist the urge to peek or poke. The fish will tell you when it’s ready to flip; it will slide easily off the grates when the skin is fully crisped and the flesh has cooked about 70% through. You’ll see the opaque color creeping up from the bottom.
Only then do you gently flip the fillet over to cook the flesh side for a final 2-3 minutes. This brief finish on the other side ensures even cooking and gives a lovely, light sear to the top. The result? A piece of salmon that’s juicy inside, with a shatteringly crisp skin that’s practically its own condiment.
The Skin-Up Exception (And Why It Exists)
Now, for the curveball. Some chefs advocate grilling salmon skin side up for the entire cook. This method is favored when you’re working with a very thick fillet or a particularly delicate sauce. The logic: the skin shields the flesh from direct heat, allowing the interior to cook gently without charring the outside.
In this approach, you cook the flesh side directly on the grates first for a few minutes, then flip it skin-side up to finish. The result is a more evenly cooked, moist interior, but you sacrifice that glorious, crackling skin—it steams rather than fries. It’s a trade-off, and not one most of us want to make.
Consider this: the “skin up” method is often used for plank grilling (on cedar or alder wood). The plank provides a gentle heat, so the skin is more about protection than crispiness. But on bare, hot grates? Skin down wins every time.
