In a large pot, glaze the bottom with your fish sauce and oil.
Toss in your radish, meat, garlic, ginger, and pepper flakes. Give everything a mix. If you have the time, allow this to set on your counter for 15-20 minutes.
Begin cooking your pot on medium, pepper to taste and when your meat begins to sizzle a bit, pour in your water/broth.
Bump up the heat to medium-high and bring the entire pot to a bubble until your radish gets nice and tender. Top with green onions and serve with steamed rice and Kimchi.
Recipe by The Squishy Monster at http://www.thesquishymonster.com/2013/01/korean-radish-beef-soup.html