Panasonic Corp. has launched a washing machine with a designated program for curry stains in India, the first of its kind in the South Asian country. The Japanese home appliance maker aims to edge out rivals by adding the special feature for India's national dish to its washing machines. Analyzing ingredients in curries, including turmeric, chili and mustard, Panasonic found the best combination of water temperature, water flow and length of washing program for tackling curry stains, after some 18 months of work. The special program is included in high-end models of a washing machine series launched this month, priced between some INR 22,000 and INR 29,000. India's penetration rate for washing machines is only around 10%, leaving enough room for considerable growth in sales.