Heat the olive oil over medium-low heat. Add the garlic and cook until dark brown, about 2 to 4 minutes, stirring often to avoid sticking.
Spoon into blender. Add the peas, milk and mint. Blend until smooth. Add in the mustard, Tabasco, salt and pepper and store until ready to cook fish
Make the Salmon
Heat a grill to medium heat and oil grates.
In a small saucepan, heat the pea sauce until slightly thickened and beginning to bubble.
Drizzle the salmon with oil and season with salt and pepper. Grill for 8 to 10 minutes, flipping halfway through cook time, until done and easily flaked with a fork.