Take warm water in a bowl. This is to activate yeast. Make sure you use warm water and not hot water. Using too hot water can kill the yeast and not activate it. Add in sugar. Sugar helps activate the yeast. Instead of sugar, you can use honey too.Sprinkle over some dry yeast in this sugary warm water. Leave aside for 5 minutes for the yeast to activate. Now you can see the yeast is activated. it should look foamy and frothy.

To this yeasted water, add in all purpose flour, salt and glutinous rice flour. This helps to create chewy texture in hotteok. Use a spatula to mix the flour into the water to create a sticky dough. Drizzle in oil over the dough. This oil prevents the dough from drying out and makes it soft. Mix the oil into the dough gently. Cover this with a towel or lid and let it ferment for 1 hour till the dough is doubled in size.

For Filling. Take brown sugar in a bowl. Instead of brown sugar you can use white sugar as well. Add in cinnamon powder and walnuts. Mix well and set aside.

Grease your hands really well with oil. The dough will be sticky. So make sure you grease your hands with oil. Also before shaping the hotteok, make sure you heat up the oil on low medium heat. Take a small portion of dough. Flatten it gently in your hands. Spoon some brown sugar, nuts filling into the dough. Seal from the sides to cover the filling with dough. The dough will be very soft so this will be easy. If you see any gaps in the dough, just add some more dough and seal it.

Heat oil for shallow frying. Drop in hotteok carefully and fry on low medium heat for 30 seconds. Flip over, Use a press like potato masher. Press the hotteok gently so it flattens. Press multiple times to ensure the hotteok doesn't puff and gets fried evenly. Hotteok has to be fried on low heat so it gets crispy on the outside while the inside is chewy. Fry the hotteok till it gets golden brown in colour. If some of the brown sugar leaks out, it is not a big deal. Once the hotteok is fried till golden brown. Strain onto some paper towel. Let it cool for a few minutes before serving.