Por Kwan Beef Flavor Paste is a blend of high-quality ingredients, including beef, herbs, and spices, to create a rich, aromatic flavor profile for Pho broth, enhancing its depth, umami, and spiciness, resembling traditional Vietnamese Pho flavors.full-flavored noodle soup. Simply boil 3 cups water and cook rice stick noodles for a few minutes until tender. Add 1 teaspoon pho paste, add sliced beef as desired, with bean sprouts and fresh cilantro. Delicious!