PURPOSE: A method of manufacturing tea is provided to improve the preference by reducing the bitter taste of Petasites japonicas and Salvia plebeia R.Br. and the sharp taste of Helianthus tuberosus.CONSTITUTION: Harvested Petasites japonicas is washed and parboiled in the boiling water at 100deg.C for 20-30 seconds. The parboiled Petasites japonicus is put into a cold/hot dryer and dried for 20-30 hours. Drying is conducted repeatedly by supplying cold air of 2-10deg.C for 30-120 seconds and warm air of 20-30deg.C for 30-120 seconds later. Dried Petasites japonicas is pulverized to 10-50mesh using a pulverizing device. Helianthus tuberosus is washed and sliced with 3-10mm thickness. Sliced Helianthus tuberosus is put into the cold/hot dryer and dried for 20-30 hours. Drying is conducted repeatedly by supplying cold air of 2-10deg.C for 30-120 seconds and warm air of 20-30deg.C for 30-120 seconds later. Dried Helianthus tuberosus is stir-fried at 65-70deg.C for 10-30 minutes. Stir-fried Helianthus tuberosus is pulverized to 10-50mesh using a pulverizing device. Petasites japonicus powder 5-10 weight% and Helianthus tuberosus powder 90-95 weight% are mixed. Petasites japonicus powder 0.2g and Helianthus tuberosus powder 1.8g are mixed to pack a 2g tea-bag. Petasites japonicus powder 1-10 weight%, Helianthus tuberosus powder 70-95 weight%, Kalopanax pictus leaf powder 1-10 weight%, Cudrania tricuspidata leaf powder 1-10 weight% and Salvia plebeia R. Br. powder 1-10 weight% are mixed to manufacture a tea mixture.COPYRIGHT KIPO 2013[Reference numerals] (AA) Manufacturing Petasites japonicus powder (BB) Manufacturing Helianthus tuberosus powder (CC) Manufacturing Kalopanax pictus leaf powder (DD) Manufacturing Cudrania tricuspidata leaf powder (EE) Manufacturing Salvia plebeia R. Br. Powder (S11) Parboiling Petasites japonicas (S12) Drying Petasites japonicas (S13) Pulverizing Petasites japonicas (S21) Cutting Helianthus tuberosus (S22) Drying Helianthus tuberosus (S23) F
