Heat oil in 12-inch nonstick skillet over medium-high heat until shimmering. Add shallot and cook until softened and starting to brown, about 2 minutes. Add asparagus, pinch salt, and pepper to taste, and cook, stirring frequently, until crisp-tender, 5 to 7 minutes. Transfer asparagus mixture to bowl and stir in salmon and lemon juice.

Makes 3/4 cup