Graduate students Youhao Yang, a chemical engineering major; Krystal Morales, a biochemistry/biophysics major; Carol Vargas a biochemistry/biophysics major; Mari Esparza, a veterinary medicine student, and Angela Chang, a veterinary medicine student, taste wine Thursday evening at the Association of Former Students Alumni Center. The event allows graduate students to mix and mingle, while an instructor teaches how to properly taste wine.