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A filter envelope which is filled with ground coffee or other drinkable dry granular substance by a user and sealed for use comprises two (2) round filter media sections crimped together about a perimeter and an extended opening along one (1) edge. The user would fill the interior space of the filte

A filter envelope which is filled with ground coffee or other drinkable dry granular substance by a user and sealed for use comprises two (2) round filter media sections crimped together about a perimeter and an extended opening along one (1) edge. The user would fill the interior space of the filter with a desired amount of chosen dry granular substance through the opening. A preferred embodiment comprises the dry granular substance to comprise ground coffee for subsequent brewing within a conventional coffee machine including those such as percolators that require the filter to have a central hole.

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1. A system for customizable filling of a filter envelope with an amount of a dry drinkable substance, comprising: said filter envelope comprising a dual-layered filter media and a filling aperture, further comprising:a main body, comprising a first side having a first inner surface with a first per

1. A system for customizable filling of a filter envelope with an amount of a dry drinkable substance, comprising: said filter envelope comprising a dual-layered filter media and a filling aperture, further comprising:a main body, comprising a first side having a first inner surface with a first perimeter edge bonded to a second inner surface with a second perimeter edge of a second side, thereby defining an interior in fluid communication with said filling aperture; and,an opening, comprising coextensive portions of said first side and said second side extending away from said main body and terminating in a non-bonded front opening defining said filling aperture;a funnel for providing a filling means for said dry drinkable substance therein said filter envelope; and,a sealing means for securing said dry drinkable substance within said filter envelope via said sealing means;wherein a user fills said filter envelope with said amount of dry drinkable substance therein; and,wherein said filter envelope filled with said dry drinkable substance therein is processed to provide a drinkable beverage. 2. The system of claim 1, wherein said filter envelope is adapted for use in a conventional coffee machine. 3. The system of claim 1, wherein said first side and said second side are bonded by an adhesive and a crimped edge. 4. The system of claim 1, wherein said sealing means further comprises a pair of valley folds formed by a folded upper portion of said extended opening of said first side and motioned underneath said second side. 5. The system of claim 1, wherein said filter envelope comprises dimensions enabling use within a percolating coffee machine. 6. The system of claim 5, wherein said filter envelope further comprises: a main body with a circular center opening, comprising a first side having a first inner surface with a first perimeter edge bonded to a second inner surface with a second perimeter edge of a second side and a first center aperture of said first inner surface bonded to a second center aperture of said second inner surface, thereby defining said interior; and,an extended opening comprising a non-bonded front opening defining said filling aperture in fluid communication with said interior. 7. The system of claim 6, wherein said first side and said second side are bonded by an adhesive and a crimped edge. 8. The system of claim 6, wherein said sealing means further comprises a pair of valley folds formed by a folded upper portion of said extended opening of said first side and motioned underneath said second side. 9. The system of claim 1, wherein said funnel comprises a conical mouth in fluid communication with a hollow stem; wherein said stem of said funnel is sized to fit within said filling aperture. 10. A method for filling a filter envelope with a dry granular substance for use within a coffee machine comprises the following steps: providing said filter envelope further comprising: a main body, comprising a first side having a first inner surface with a first perimeter edge bonded to a second inner surface with a second perimeter edge of a second side, thereby defining an interior; and,an opening comprising coextensive portions of said first side and said second side extending away from said main body and terminating in a non-bonded front opening defining a filling aperture in fluid communication with said interior;obtaining an amount of a desired dry drinkable substance;filling said filter envelope by directing said dry drinkable substance into said interior through said filling aperture; and,sealing said filling aperture. 11. The method of claim 10, wherein said step of filling said filter envelope with said dry drinkable substance is accomplished with a funnel. 12. The method of claim 10, wherein said step of sealing said filling aperture comprises the following steps: creating a pair of opposing valley folds on either side first side or said second side of said extended opening; and,tucking said extended opening on an opposite side of said pair of opposing valley folds. 13. A method for filling a filter envelope with a dry granular substance for use within a percolator-style coffee machine comprises the following steps: providing said filter envelope having a center opening, further comprising: a main body, comprising a first side having a first inner surface with a first perimeter edge bonded to a second inner surface with a second perimeter edge of a second side and a first center aperture of said first inner surface bonded to a second center aperture of said second inner surface, thereby defining an interior;an opening comprising coextensive portions of said first side and said second side extending away from said main body and terminating in a non-bonded front opening defining a filling aperture in fluid communication with said interior;obtaining an amount of a desired dry drinkable substance;filling said filter envelope by directing said dry drinkable substance into said interior through said filling aperture; andsealing said filling aperture. 14. The method of claim 13, wherein said step of filling said filter envelope with said dry drinkable substance is accomplished with a funnel. 15. The method of claim 13, wherein said step of sealing said filling aperture comprises the following steps: creating a pair of opposing valley folds on either side first side or said second side of said extended opening; and,tucking said extended opening on an opposite side of said pair of opposing valley folds.