Hmm...I thought it's natural to find vege with worms, unless
they've been overdosed with insecticide? Esp. those xiao gai lan
with many layers - usu. can find a worm or two or sometimes tiny
snails hiding inside.
I like the Tai Hua low salt sauce, gives vege a better taste than
salt. This thread has given me a couple of nice ideas, like the
tang gui soya sauce for fish. 
I use the high grade thick dark soya sauce to cook tau
yu chicken, but it taste a bit strange, got bitter taste. 
