Slice your sourdough bread into thick pieces. Make sure they are even in size. This ensures they cook at same rate. Use a serrated knife for this task.

Spread softened butter on one side. Be sure to cover the whole slice. Do not miss the crusty edges. This makes every bite very golden.

Grate your Asiago and Cheddar cheese now. Mix them together in a bowl. This ensures a balanced flavor profile. Use about one cup of cheese total.

Place one bread slice in the pan. Keep the buttered side facing down. The pan should be on low heat. You want a slow toast.

Pile the cheese mix on the bread. Use a very generous amount here. Let some fall toward the edges. It will create a cheese skirt.

Add a layer of chopped kimchi now. Spread it evenly over the cheese. This adds the famous Ramsay heat. Do not add too much liquid.

Place the second bread slice on top. The buttered side must face up. Press it down very gently. This helps the layers stick together.

Turn the stove to medium-low heat. Let the bread toast very slowly. Slow cooking makes the best crust. Patience is key for this step.

Cover the pan with a small lid. This helps the cheese melt fully. Keep it covered for two minutes. Check the bottom of the bread.

Flip the sandwich after two minutes. Be careful not to spill cheese. Use your spatula and your fingers. Cook the other side until golden.

Remove the sandwich from the pan. Let it sit for one minute. This lets the cheese set slightly. It makes it easier to cut.

Cut the sandwich on a diagonal. This makes it look very fancy. Serve it while it is hot. Look at that amazing cheese pull.