The Japanese name for this dish, Shabu Shabu, refers to “washing” the wafer-thin slices of beef in hot stock. You will need a portable stove to cook this meal at the table.
Mix all the ponzu ingredients in a glass jar and leave overnight. Strain and keep the liquid in the jar.
Make the goma-dare. Gently roast the sesame seeds in a dry frying pan on a low heat until the seeds pop. Grind the sesame seeds to form a smooth paste. Add the sugar and grind, then add the other ingredients, mixing well. Pour 30ml/2 tbsp into