Start by adding the spring onions to a sealable bag. Pour in the buttermilk, seal, and let it marinate overnight in the refrigerator. Next, add the gochujang and mayonnaise to a small bowl, and use a fork to blend the two together. Cover and place in the refrigerator until ready for use.

The following day, add the flour, salt and pepper to a mixing bowl. Give a good stir. Take the spring onions, draining them from the buttermilk, and add them to the bowl.

Give a good toss to make sure the onions are well coated, then heat up a skillet on medium heat, adding in the oil.

Once the oil comes to temperature, about 350 degrees, gently add in a few spring onions. Cook for a couple of minutes per side (if not fully submerged), until the batter is golden brown. Once golden, remove with some tongs and place on a paper lined plate to remove any excess oil. Season with a pinch of salt. Repeat.

To your serving plate, take the gochujang and mayonnaise mixture, and with a spoon smear it onto the center of the serving plate.

Line up the fried spring onions on top of the sauce, and serve.