FIELD: manufacture of cassette containing one portion of powdered coffee and adapted for use in standard espresso coffee apparatus for preparing of common coffee beverage free of foam on its surface.
SUBSTANCE: cassette has bottom equipped with passage covered with gas-impermeable foil. Before inserting said cassette into coffee preparing apparatus, foil is to be manually removed. Filtering member positioned between passage and powdered coffee is designated for preventing leakage of powdered coffee from cassette. Passage is adapted for preventing creation of hydraulic pressure in cassette, which might cause formation of foam.
EFFECT: increased efficiency in preparing of foam-free coffee beverage having taste of normal filtered coffee.
23 cl, 4 dwg
