Step 1

Boil vinegar in heavy small saucepan over medium heat until reduced by half, about 3 minutes. Pour vinegar into large bowl. Whisk in oil, mustard, marjoram and garlic. Season dressing to taste with salt and pepper.

Step 2

Cook asparagus in large pot of boiling salted water until crisp-tender, about 4 minutes. Drain; rinse with cold water and drain again. Add asparagus and bell pepper to dressing; toss to blend well. Sprinkle with pecans and serve.