potatoes, such as Maris Piper or King Edward, chopped
4 tbsp freshly grated horseradish
2-3 onions, halved
mixed root vegetables, such as carrots or parsnips, roughly chopped
2 tbsp English mustard powder
pinch English mustard powder
2 tbsp semolina
1 tbsp freshly ground black pepper
sea salt and ground black pepper
salt and freshly ground black pepper
1 tsp caster sugar
4 heaped tbsp flour
olive oil or goose fat, at room temperature
2 tbsp sea salt
Β½ tsp salt
2 tbsp sunflower oil
2 tbsp vegetable oil
1 tbsp white wine vinegar
150ml/5fl oz double cream
2 free-range eggs, beaten
milk, to bind
1 x 5kg/11lb rib of beef, French trimmed (you can ask your butcher to do this for you)
100²µ/3Β½΄Η³ϊ goose fat