8 garlic cloves
16 medium-sized Maris Piper or King Edward potatoes (each about 175g/6oz), peeled, cut into equal-sized pieces
8 sprigs thyme
350g/12oz plain flour
4 tsp plain flour
freshly ground black pepper
1 tbsp English mustard powder
salt
sea salt, to taste
vegetable oil, for cooking
a drizzle of vegetable oil or 2 tsp duck fat
5 tbsp duck fat
4 large or 5 medium free-range eggs
800ml/1 pint 7fl oz milk (you may not need all of it)
2.5kg/5陆lb oven-ready rib of beef on the bone
350ml/12fl oz red wine