Instant soy sauce injection!

I don’t really know what to say. Just one thing I’ve been wondering: the contents of the chopstick on the left seems to be too light in color to be soy sauce. Would it be vinegar? Japanese product website (translated).

(Edited Jan 16th) I realise that the “cellpics” category has kind of lost its original purpose… either I should rename it, or I’ll need to use it for what it was originally meant for, namely personal random pictures…