Cut off the stem of the napa cabbage and chop it into bite-sized pieces.
Put it in a bowl and salt it with a handful of salt (it's okay if it's oversalted).
Cover with cold water and then press down with a heavy bowl.
Let it sit for about 1 hour (doesn't need to be refrigerated).
Peel the onion, garlic, ginger and cut them into large pieces.
Cut the pear/apple.
Lightly simmer the rice flour with water until it forms a thick, sticky consistency. Then let it sit.
Cut the carrots and green onions into small strips.