What year did chicken pho appear ?
The variations in meat , broth , and additional garnishes such as lime , bean sprouts , " ngò gai " ( " Eryngium foetidum " ) , " húng quế " ( Thai / Asian basil ) , and " tương đen " ( bean sauce / hoisin sauce ) , " tương ớt " ( hot chili garlic sauce , e.g. , Rooster Sauce ) appear to be innovations made by or introduced to the South .