lay the salmon in a baking pan, whisk together the mustard, soy sauce, olive oil, and garlic in a small bowl.

drizzle half the marinade onto the salmon and let sit for approximately 10 min.

either grill for 4-5 min. turn over and grill for another 4-5 min. OR

put salmon in the oven and broiled it for 5-10 min., turn over and broiled for another 5-10 min. until slightly brown.

spoon leftover marinade on top and let fish to rest for 10 min. and serve.