1. Heat 1 teaspoon oil in a large nonstick skillet over medium-high heat. Sprinkle pork with 1/4 teaspoon salt and 1/4 teaspoon pepper. Add pork to pan; cook 3 minutes on each side or until done. Remove from pan, and keep warm.
2. Add remaining 4 teaspoons oil to pan; reduce heat to medium. Add shallots to pan; cook 10 minutes or until tender, stirring occasionally. Add garlic; cook 2 minutes. Stir in 1/2 cup water and vinegar; simmer 6 minutes. Stir in remaining 1/4 teaspoon salt and remaining 1/4 teaspoon pepper. Spoon shallot mixture over pork. Serve immediately.