1. Place shrimp in a medium bowl. Sprinkle with ginger, salt, and pepper; toss well. Let stand 5 minutes.
2. Combine 1/2 cup water and next 6 ingredients (through chile paste) in a small bowl, stirring with a whisk.
3. Heat 1 teaspoon canola oil in a large nonstick skillet over medium-high heat. Add shrimp mixture to pan; stir-fry 2 minutes. Remove shrimp mixture from pan; set aside. Wipe pan dry with a paper towel. Heat remaining 2 teaspoons canola oil in pan over medium-high heat. Add onion and garlic; stir-fry 1 minute. Add celery; stir-fry 1 minute. Return shrimp mixture to pan; stir-fry 1 minute or until shrimp are done.
4. Add water mixture to pan. Bring to a boil; cook 1 minute or until thick, stirring constantly with a whisk. Serve immediately.