1. Heat salted water in large pan and add the potatoes.Cover and boil for about 10-15 minutes until soft and ready to mash.
2. Whilst the potatoes are boiling heat half the butter in a frying pan on a low heat. When butter melted, add the spring onions (scallions)and spring greens/cabbage and fry for approx 5 minutes until softened. Add the garlic and fry for few minutes more. Remove from heat and set aside.
3. By now the potatoes should be cooked. After draining, add salt & pepper, cream and the other half the butter and mash until smooth and creamy.
4. Mix in the cabbage mix and stir well through the potatoes to ensure they are evenly distributed.