Trim and discard the outer leaves of your cabbage.
Slice your cabbage lengthwise into quarters and remove the core. Chop it up into large bite-size pieces and place in a salad spinner. Wash and drain the cabbage, then give it a good spin.
Add cabbage to a large bowl then season with 1/4 cup sea salt. Toss well and allow cabbage to sit for about 1 hour, stirring every 15 minutes.
Meanwhile, slice your radishes and carrots into matchsticks and slice the green onions then place in your large bowl.
Add in all of your remaining ingredients.
Add more or less pepper flakes or gochugaru depending on how much spice you like.
Toss thoroughly to combine. Cover the bowl and allow it to sit at room temp overnight. I like to place a plate on top to weigh down the veggies in order to keep them submerged in the brine.
Transfer your kimchi into a clean jar (or several jars) together with all of the brine left at the bottom of the bowl. Keep your fermented vegetables covered/submerged in the brine.
Stays well refrigerated for up to 2 months.
Serve your kimchi with any savory meal from breakfast to dinner.
Enjoy!