| 摘要 |
PROBLEM TO BE SOLVED: To enable a coffee filter, storing coffee powder in a basket set between upper and lower pots, heating and boiling water saved in the lower pot, pouring the boiled water through the coffee powder and saving the extracted coffee liquid in the upper pot, to extract coffee liquid by heating the coffee filter by a microwave oven without deteriorating the coffee powder. SOLUTION: The upper and lower pots 1, 2 of this coffee filter are made of, for example, a heat-resisting material which can transmit magnetic waves from a microwave oven, and the basket 3 and filters 12, 21 covering the top and bottom of the basket are made of a metal material which cannot transmit magnetic waves. Therefore, water saved in the lower pot 2 can be heated/boiled up by a microwave oven, while the coffee powder is protected from magnetic waves so that the powder will not be heated directly with magnetic waves. |
