Method:

1. Combine the mayo, sriracha, Worcestershire, horseradish cream and paprika in a bowl and mix well to combine. Season to taste with salt and lemon juice and adjust flavours where needed. Sauce should be creamy, tangy and have just enough spice. Set aside until required. *Can be made ahead of time and refrigerated.
2. To make the kupus salad, place the shredded cabbage in a bowl and drizzle with about 1 Tbsp of Olive Oil. Season to taste with vinegar, salt and white pepper and set aside to soften and infuse. Taste and adjust seasoning if required before serving. *Kupus should have a good balance of tang and salt and will reduce in size.
3. Butter 1 side of each slice of bread. Lay out 4 of the slices, butter-side down and top with shaved corned beef. Top the beef with 3 halves of cheese each.
4. Heat approximately 1 Tbsp of oil in a large fry pan over a medium heat. Place a piece of bread with topping, and one without topping in the pan, butter-side down. Fry for about 5 minutes until the bottoms are golden and crisp. Remove to a chopping board, top the beef and cheese side with red onion, a generous serve of kupus salad, and dollop the dressing over the top. Spread a bit of dressing on the other piece of bread and combine with the other to make the perfect Reuban sandwich. Cut in half and serve immediately.
5. Repeat with remaining sandwiches

Our friends at Wine Selectors suggest pairing this dish with a Chenin Blanc.