Steps
- Boil 1kg of peeled potatoes, cut into even chunks, in a covered pan of salted water for 15-20 minutes, until tender.
- Measure 100g of butter. Melt 1 tablespoon of it with 2 tablespoons of water in a heavy pan. Add 250g of finely sliced curly kale, tough stalks removed, and a pinch of salt.
- Cover and cook over high heat for 1 minute. Shake the pan and cook for 1 minute more. Drain any liquid and season with pepper.
- Drain the potatoes and mash with 100ml of milk. Beat in the kale and remaining butter, then season with salt and pepper.