Bring a large pan of salted water to the boil. Plunge in the spinach leaves and boil for about 30 seconds, just until the leaves are limp. Drain well, pressing with a wooden spoon to extract all the liquid.
Melt the butter in a heavy saucepan. Add the mince and stir over a high heat until the beef has separated and browned. Remove from the heat and stir in the paprika and flour. Gradual