Ke kou mian translates to "delicious noodle", or it could simply be referring to the Koka brand of instant noodle that the stall used in the making of this dish.
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Basically, the stall cook instant noodle with your choice of broth flavor (pork, seafood, spicy, tom yum) and added ingredients like meat and vegetables to it.
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My ke kou mian ($3/$4) contains minced pork balls, chopped vegetables and an egg.
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Other than instant noodle, you can also opt for sang meen, yee meen and you mian.
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In terms of ingredients, there may not be much but the generous portion of noodle makes for a very filling bowl.
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Read more: https://thedeadcockroach.blogspot.com/2019/12/bon-appetit-ke-kou-mian-yishun-park.html?m=1