In a bowl add flour, salt and mix well. Add the water then knead with your hand gently. Once the dough starts to be like crumbles, add vegetable oil. Knead until the dough comes together in a ball.
2. Transfer to a working surface, and knead by hand for 3 minutes. Then cover with saran wrap and let sit for 1 hour.
3. _Making the aspic (in advance, maybe a day before?)
In a small heat-safe cup, add gelatin and water. Mix. Set it aside.
4. In a cooking pot add water, green parts of a leek, ginger and bring it to a boil. Once it boils, add chinese chicken bouillon powder, oyster sauce and mix. Remove from the heat. Strain the soup into a heat-safe plate and let it cool a little to 55~60℃.
5. Add the soaked gelatin and dissolve it completely. Let it to cool to room temperature, and then chill in the fridge until firm.
6.Making the filling
In your food processor, add pork belly and process until minced. Add the ground pork and process until combined well.
7. Add cooking sake, water, sesame oil, fresh ginger, green long onion, lard, a dash of salt and sugar. Pulse until the pork turns into a paste. Transfer the meat mixture into a bowl. Cover it and keep it in the fridge if your aspic is not ready.
8. Take out the aspic from the fridge and transfer it to the food processor. Pulse for a few seconds. Add the diced aspic to the pork mixture. Mix well. Cover and chill for now.
9.Making the wrap
Take some of the dough and feed 1 to 2 times in position 1 of the Kitchenaid Pasta Roller. Change to position 2 or 3 and feed 1 to 2 times. Change to position 5 or 6 and feed 1 or 2 times. Finally change to position 8 (thinnest) and feed 1 or 2 times.
10. Cut the dough with a ring (I used a 9cm diameter one). Transfer to a lightly floured plate (Keep the excess dough to make more wrappers at the end). 1 wrapper is about 8 to 9g, so if you don't use the pasta roller, take about 9g of dough & roll it directly into a disc shape with a rolling pin.
11. Place some filling in the middle of a wrapper. Pleats the wrapper's edge with as many folds as you can :) (Pulling the edges make them thinner).
12. Prepare the steamer: place a cloth or a parchment paper with holes. Place the dumplings. Steam for about 8 minutes.
13. Meanwhile make the dipping sauce. In a small cup, add 2 tsp soy sauce and 3 tsp rice or apple cider vinegar. Mix. Place some fresh ginger, it's nice.
1. Add flour, salt and rice flour into a large bowl and stir well. Add hot water and stir with a rubber spatula. Then knead the dough by hand for about 1 to 2 minutes until it gets smooth. You can shape it into a ball.
2. Let the dough sit in the bowl for about 15 min, covered with a damp cloth.
3. Remove the bowl of your stand mixer and attach the pasta roller to it.
4. Take some of the dough (about 1/3), shape into an oval. Flatten it and dust it with flour on both sides.
5. Feed the dough through the pasta roller (setting 1 - thickest), at least 3 to 5 times or until the dough is smooth. Turn dial to the thickness setting 3 or 4 and run the dough through once or twice. Repeat (once or twice) at each following position until you reach setting 8. The target thickness really depends on your own preference. I like thin skin, so I roll it until setting 8 :)
6. Lay the rolled out sheet of dough on a cutting board and cut it out, using a circle cookie cutter (8~9cm diameter suggested). Dust the cut out wrappers with katakuriko/potato starch and set aside. Repeat as many times as you can.
Gather all the scrap dough, put it all together and re-roll it a few times until it becomes thin layers again.
1. In your stand mixer's bowl, add buckwheat flour, bread flour and gluten. Mix with a egg whisk. Then fit the KitchenAid with its dough hook.
2. Slowly drizzle in the water, scraping down the sides of the bowl as needed while you mix at the lowest speed. Continue until it comes together into a shaggy dough.
3. Knead the dough by hand (as is, in the bowl) for a few minutes. Then transfer it out to your work surface and shape it into a rough ball. Cover with plastic wrap and let it sit for about 1 hour.
4. Divide into 6 equal pieces on the work surface. Cover with plastic wrap. It is OK if the dough is not smooth at this stage.
5. Fit the Pasta Roller on the KitchenAid mixer. Set it to position 1 (thickest). Flatten by hand one dough piece into a rough rectangle about 1.5 cm thick. Process at speed 1 and slowly feed the piece of dough through the Roller. Feed it through again at the same (thickest) setting 1 several times until the dough is silky and smooth. You may fold it in half before running it through. In the beginning the dough will be ragged. As you repeat, after more runs, it will get silky and smooth alright.
6. Once the dough is smooth, turn the dial to the next thickness setting 2 and run the dough through once, then setting 3. Dust with corn starch and set is aside.
7. Repeat #5 and #6 with the rest of dough balls.
8. Attach the Spaghetti Cutter and run the dough through to cut it. Dust generously the noodles to coat them with potato starch and gently shape into serving sized bundles. Place on the prepared plate. Repeat with the remaining dough pieces.
How to boil
Get a large pot of water boiling. Add the noodles to boil there for about 30 seconds or more. You can stir them gently but only at the very beginning. It is better not to touch the soba after that, or they might become very fragile and break down into short bits. Once the soba rise in the water then strain. Rinse in cold water gently to remove the gooey texture from the surface. Immerse the washed soba back in boiling water to warm them up (at least if you are going to eat it hot). Pull them out again of the hot water, and serve in a bowl before pouring the hot soup on them.
NOTE: Better boil the soba a small quantity at a time to avoid cutting them.
You can also enjoy cold udon, directly after the cold water rinsing with tsuyu.