Japanese marinated tuna with a ginger-spiced salad and ponzu dressing

By Glynn Purnell From Saturday Kitchen Ingredients For the tuna 2 x 175g/6oz tuna steaks For the marinade 1 tbsp grated ginger 2 tbsp dark soy sauce 2 tbsp fish sauce 2 tbsp mirin 1 tbsp ground black pepper 1 garlic clove, sliced 1 lime, …