In a mixing bowl, combine ¼ cup of soy sauce, 2 tablespoons of honey, 2 tablespoons of olive oil, 3 minced garlic cloves, and 1 teaspoon of grated ginger. Whisk until well-combined.
Place the 6-ounce salmon fillet in a shallow dish or resealable bag. Pour the marinade over the salmon, ensuring it's coated. Seal and refrigerate for 30 minutes to 1 hour.
Preheat the grill to medium-high heat or the oven to 375°F (190°C). Oil the grill grates or line with foil.
After marinating, remove the salmon from the marinade and discard the marinade.
Cook the salmon on the grill or in the oven for 15-20 minutes until opaque. Check for a perfect internal temperature of 145°F (63°C).
Remove from heat and let the salmon rest for a couple of minutes before serving.
Notes
For optimal flavor, balance the ratio of soy sauce to honey. Store unused marinade in the fridge for up to 2 days or freeze for 3 months.