Ready-made curry. Combining 29 kinds of spices, Curry-Ya Curry is a signature instant curry sauce by House. It is so easy to prepare a Japanese curry dish since all you have to do is boil the packet for a 5 minutes and it’s ready to be served. Add cubed carrot, onions and other greens to your dish. Enjoy a silky smooth apanese curry in just a few minutes. Bes to pair with rice or make into noodles.