Tony Bourdaine did an episode of No reservations about Korea and he went to a factory that produced the stuff. Hundreds of earthenware jars the size of a large fermenter buried in the ground fermenting heads of cabbage. None of it was chopped up, just like the cucumber in the above pic it was quartered but not cut the whole way through and then left to ferment in the ground in the spice mix.
I'm not a huge fan of it, but it's certainly not bad when I go to the Korean restaurant as a side to the delicious Bulgogi.
Tony Bourdaine rocks, i wish there were more episodes of No reservations, he goes beyond the cookery thing and spends some time getting loaded, gotta appreciate that
