Try this lovely dish of fresh, inexpensive mackerel with a creamy potato salad, perfect for a simple supper or lunch. For the horseradish potatoes, bring a large pan of salted water to the boil ...
Fresh horseradish is difficult to source. Try a good farmers' market or specialist supplier, or look online. Keep fresh horseradish in a paper bag in the fridge for up to one week, or cut it into ...