"You can judge how good a Pho soup is by how much concentrated flavor is packed in the broth while still retaining a clean, uncloudy, clear broth. I like my Pho without Sriracha hot sauce or Hoisin sauce....I really enjoy the purity of the chicken broth without anything to hide its flavor and aroma. There are 2 very important steps to a clear but intense broth - 1) parboiling the chicken to get rid of the impurities 2) charring the ginger and onion for a naturally sweet, robust flavor. A note on fish sauce - I prefer the Three Crabs brand. Choose a fish sauce light in color...it should look like brewed tea. Anything darker than that (looking like Coca Cola) is inferior quality. Three Crabs fish sauce contains gluten, please check labels if you are making GF substitutions...."