Grilled Mahi Mahi with Pineapple

A Tropical Grill Night Worth Firing The Coals For

This grilled mahi mahi leans into Hawaiian and Polynesian flavors with a gingered pineapple marinade that does triple duty: tenderizing the fish, layering sweet and savory flavor, and serving as a basting sauce on the grill. The bromelain enzyme in fresh pineapple juice is what tenderizes the fish, breaking down proteins gently for a melt-in-your-mouth bite.

The marinade itself is a study in balance. Pineapple juice brings sweet acidity, soy sauce delivers salt and umami, brown sugar adds caramel notes, sesame oil contributes nutty depth, and fresh ginger and garlic provide aromatic punch. A pinch of red pepper flakes keeps everything from going one-note sweet.

The split-marinade trick is essential and the recipe gets it right. One cup goes on the fish, the rest stays clean in the fridge for basting. Brushing raw-fish-contaminated marinade on cooking food is a food safety no-go.

Marinating between 2 and 12 hours is the sweet spot. Shorter and the flavor doesn’t penetrate. Longer and the bromelain goes to work too aggressively, breaking the fish into mush.

Pro Tips

• Spray the grill grates generously before heating, as the recipe says. Mahi mahi is delicate and sticks to bare grates aggressively.
• Grill the pineapple slices alongside the fish. Caramelized pineapple deepens the flavor connection between the marinade and the fruit garnish.
• Pull the fish when it just flakes with a fork. Past that point it dries out fast.
• Discard the basting marinade in the last 2 minutes of cooking. Any uncooked marinade after that point can cause food safety issues.
• Top with sliced scallions and an extra squeeze of lime right before serving for fresh contrast.

Variations

• Substitute swordfish, halibut, or salmon for mahi mahi. Adjust grill time based on thickness.
• Use mango juice instead of pineapple for a different tropical fruit profile (but lose the bromelain tenderizing).
• Add 1 tablespoon of Sriracha to the marinade for extra kick.