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salt
1 pound macaroni
1/2 small red onion, minced
2 stalks celery, minced
1/4 cup minced fresh parsley
2 TBS lemon juice
1 Tablespoon dijon mustard
1/8 teaspoon garlic powder
pinch cayenne pepper
1 1/2 mayonaise
Pepper
Boil macaroni and add 1 Tablespoon salt to water while boiling, cook until nearly tender, about 5 minutes. Drain and rinse in cold water, keep macaroni wet.
Pour macaroni in a large bowl and toss in onion, celery, parsley, lemon juice, mustard, garlic powder and cayenne and let sit for at least 2 minutes. Add mayonaise and let sit until no longer watery. Season with salt and pepper to taste. Refrigerate for at least one hour before serving.