Rainbow Trout with Green Onion - Ginger Mayonnaise

A lime and sesame oil marinade gives rainbow trout a bright, nutty base, then a homemade ginger mayo loaded with green onions and soy sauce adds a cool, rich finish that pulls the whole plate together.

The marinade works fast on trout. This is a mild, delicate fish that absorbs flavors quickly, so you get real impact without needing to wait overnight. Lime juice tenderizes the surface while sesame oil leaves a toasty depth that plain vegetable oil can’t match.

The green onion ginger mayo is where this recipe really stands out. Fresh minced ginger, sliced scallions, a splash of soy, lemon juice, and a touch more sesame oil stirred into mayonnaise. Make it ahead and refrigerate so the flavors have time to come together. It tastes good right away but even better after an hour in the fridge.

Pro Tips

• Pat the trout completely dry after marinating. Wet fish won’t get a good sear or crisp skin.
• Don’t skip the sesame oil in the mayo. That tiny ⅛ teaspoon ties the sauce back to the marinade and makes the whole dish feel cohesive.
• Fresh ginger only. Dried ground ginger won’t give you the sharp, bright heat this mayo needs.

Variations

• Grill the trout for a smokier finish that pairs well with the creamy mayo.
• Use salmon fillets if trout isn’t available. Increase cooking time slightly for thicker cuts.
• Add a pinch of wasabi to the mayo for a sinus-clearing kick.