1. Wash hands with soap and water.
    
2. Cut asparagus into 2-inch pieces. Bring two cups water to a boil over high heat. Add asparagus, reduce heat, and simmer until crisp-tender, about 5 minutes. Drain.
    
3. In the same saucepan, combine olive oil, lemon peel, and lemon juice. Cook over medium heat for about 2 minutes. Toss with warm asparagus. Serve warm. Garnish with lemon slices.

Store in an airtight container for up to four days in the refrigerator.