Table 1. Result of questionnaire about stir-frying of potato and onion at cooking of curry, stew and Niku-jaga.

	Curry		Stew		Niku-jaga
	Potato	Onion	Potato	Onion	Potato	Onion
Stir-fry	160	207	144	184	135	143
Not stir-fry	78	24	88	39	94	52
Not use	12	3	5	0	0	0
Not cook at home	5	5	17	17	22	22
No answer	2	18	3	17	6	40
Total	257	257	257	257	257	257