¼ cup sodium bicarbonate (This is more than you need, you will need only 1 tsp. This makes enough for 12 batches. It will keep indefinitely in a sealed container.)
To make the noodles
1 tsp of the baked sodium bicarbonate
200 grams plain flour
100 ml warm water
instructions
Bake the sodium bicarbonate
Spread the ¼ cup of sodium bicarbonate on a foil or paper lined baking sheet and bake for 1 hour at 120 deg C.
Make the noodles
Take 1 tsp of the baked bicarb and store the remainder for later use.
Dissolve the 1 tsp of baked bicarb in the warm water.
Add the liquid to the flour and mix into a dough. It will be quite dry.
Knead for 5 minutes.
Wrap the dough and rest for at least 30 minutes.
Roll out thinly and cut into fine noodles. I used a pasta machine to roll and cut the dough.
Cook in boiling unsalted water for 1-2 minutes, drain, rinse and use in your favourite recipe.
Recipe by quinces and kale at http://quincesandkale.net/recipes/hand-made-ramen-noodles/