Here’s the sweet spot. For most marinades, aim for 30 minutes to a maximum of 1 hour. That’s it. That’s the whole secret. You get all the flavor without turning your dinner into fish pudding.
Why so short? Because salmon is a delicate diva. It’s not a tough steak that needs a 24-hour hug. Marinades have acid—lemon juice, vinegar, wine. Acid cooks the fish. It breaks down the proteins fast.
Think of it like this: you wouldn’t leave a paper towel in a puddle for a week. Same logic applies to your expensive salmon. Respect the fish.
What If You Use a Dry Rub?
Oh, you’re a dry-rub rebel? Nice. That’s a different game. No acid, so you can let it sit longer. A dry rub of salt, spices, and herbs can hang out for 2 to 4 hours in the fridge.
But even then, don’t go crazy. Salt pulls out moisture. Leave it all day, and you get dry, jerky-like salmon. Nobody wants that for a Tuesday night dinner. Jerky is for road trips.