think as long as you go to any NTUC, cold storage, go to the
japanese food section, they will sell de...
think its some paste or concentrate, then will put there how to mix
and what you can put inside to enhance flavor and then cook the
soup...then have to put in fridge to "cool" it, so its actually
very nice to east cold noodles, SOBA in a hot day de....especially
if you manage to keep the soup cold in the flask. 
