Prepare cabbage. Slice a small to medium sized cabbage thinly using either a large sharp knife or a mandolin. I think this coleslaw recipe works best with very thinly sliced cabbage. I love to use a mandolin as I find it really speeds up the process, and for me makes it easier to produce consistently wafer thin slices.
Salt cabbage. Put the sliced cabbage (approximately 600g prepared weight) into a large bowl. Start by adding just 1 teaspoon of fine salt and gently mix into the cabbage. I find it easiest to use my hands to ensure the salt is thoroughly mixed through.
Taste check and leave to salt. Check the taste of the cabbage to see if from a taste perspective it is salty enough. I generally find a second teaspoon of salt is needed. Leave the cabbage in the salt for about 20 to 30 minutes. Whilst the cabbage is salting, prepare the onion and dressing.
Prepare the onion. Peel and grate a small onion or half a medium-sized onion. This should give roughly 1 tablespoon of grated onion (lightly packed).
Prepare the caraway seeds. Measure out 1 tablespoon of caraway seeds and place on a board. Lightly bruise the seeds by crushing them with the back of a spoon or by rolling across them with a rolling pin, so that aroma of the seeds is released.
Make the dressing. Put 100ml of vinegar, 1 teaspoon of sugar, the caraway seeds and grated onion into a small bowl. Mix thoroughly, stirring to help dissolve the sugar. Leave to stand at room temperature for about 10 minutes.
Add dressing to cabbage. Add the dressing mixture to the salted cabbage and mix together. This delicious Purple Cabbage Slaw can be eaten straight away or kept for a day or two to allow the flavours to come together.