A ground roast coffee tablet which is capable of being brewed in a conventional automatic drip coffee maker, and which exhibits sufficient strength to withstand all aspects of manufacture, handling, packaging, transport without breakage but also readily disintegrates when contacted with hot water du
A ground roast coffee tablet which is capable of being brewed in a conventional automatic drip coffee maker, and which exhibits sufficient strength to withstand all aspects of manufacture, handling, packaging, transport without breakage but also readily disintegrates when contacted with hot water during brewing, is made by subjecting conventional ground, roasted coffee to a multi-step compaction process in which at least two compression steps are carried out in the same compaction die.
대표청구항▼
1. A free-standing coffee tablet for use in an automatic drip coffee maker (ADC) comprising: the coffee tablet made by compressing ground roast coffee in a multi-step compaction process in which at least a first compression and a separate second compression are carried out in the same compaction die
1. A free-standing coffee tablet for use in an automatic drip coffee maker (ADC) comprising: the coffee tablet made by compressing ground roast coffee in a multi-step compaction process in which at least a first compression and a separate second compression are carried out in the same compaction die, wherein the separate second compression is carried out at a compaction pressure of greater than 84.8 MPa and less than 169.7 MPa and the first compression is carried out at a lower compaction force than the separate second compression so as to form an unbroken coffee tablet prior to use, and wherein there is a delay period of between 80-900 milliseconds after the first compression and before the separate second compression and no pressure is applied to the ground roast coffee during the delay period, such that the coffee tablet obtained exhibits a hardness of at least 40 N (Newtons), a friability of no greater than 6%, a density between 0.85-0.99 g/cm3, and readily disintegrates when contacted with hot water during brewing in the ADC. 2. The coffee tablet of claim 1, wherein ten (10) of the tablets, unbroken, are brewable with 1420 ml of water in an ADC having a water delivery rate of approximately 2.5-3.1 g/sec to deliver a consumable coffee beverage having an absorbance per gram of >0.07. 3. The coffee tablet of claim 1, wherein a compaction force of the first compression is about 40% to about 80% of a compaction force of the separate second compression. 4. The coffee tablet of claim 1, wherein the tablet contains sufficient coffee solid to make only a standard serving of brewed coffee. 5. The coffee tablet of claim 1, wherein the tablet comprises greater than 99% coffee. 6. The coffee tablet of claim 1, wherein the tablet has a mass of about 1.9-3.5 g. 7. The coffee tablet of claim 1, wherein ten of the tablets, unbroken, are brewable with 1420 ml of water in an ADC having a water delivery rate of approximately 2.5-3.1 g/sec to deliver a consumable coffee beverage having a brew solids level of from about 0.3% to about 1.3%. 8. The coffee tablet of claim 1, wherein approximately 26-30 grams of the tablets, unbroken, are brewable with 1420 ml of water in an ADC having a water delivery rate of approximately 2.5-3.1 g/sec to deliver a consumable coffee beverage having an absorbance value of about 1.7-2.5. 9. The coffee tablet of claim 1, wherein when approximately 26 to 30 g of coffee tablets are brewable in an ADC having a water delivery rate of approximately 2.5-3.1 g/sec using approximately 1420 g of water, the ratio of coffee solids extracted during an initial 250 g of brewed coffee to the coffee solids extracted during a subsequent 250 g of brewed coffee immediately following the initial 250 g of brewed coffee is approximately 0.30-0.55. 10. The coffee tablet of claim 1, wherein the first compression has a compression dwell time less than 25 milliseconds, and wherein the separate second compression has a compression dwell time less than 25 milliseconds. 11. The coffee tablet of claim 1, wherein: a pressure of the first compression is about 50% to about 60% of the compaction pressure of the separate second compression;the tablet exhibits a hardness of at least 50 N, a friability of no greater than 3.5%;the tablet comprises greater than 99% coffee, is essentially free of a binder, and has a mass of about 1.9 g to about 3.5 g; andapproximately 26-30 grams of the tablets, unbroken, are brewable with 1420 ml of water in an automatic drip coffee maker having a water delivery rate of approximately 2.5-3.1 g/sec to deliver a consumable coffee beverage having: (a) a brew solids level of from about 0.3% to about 1.3%; (b) a yield of at least 26%; (c) a brew absorbance of at least 1.6; and (d) a ratio of absorbance of an initial 250 g portion of brewed coffee to an absorbance of a subsequent 250 g portion of brewed coffee immediately following the initial 250 g portion of approximately 0.33-0.57. 12. The coffee tablet of claim 1, which further comprises a flavorant. 13. The coffee tablet of claim 1, wherein at least one of the compressions has a compression dwell time of less than 75 milliseconds. 14. A free-standing coffee tablet for use in an automatic drip coffee maker (ADC), the coffee tablet comprising: the coffee tablet made by compressing ground roast coffee in a multi-step compaction process in which at least a first compression and a separate second compression are carried out in the same compaction die,wherein the separate second compression is carried out at a compaction pressure of greater than 84.8 MPa and less than 169.7 MPa,the first compression being carried out at a first compression compaction force and the separate second compression being carried out at a second compression compaction force,wherein the first compression is carried out at the first compression compaction force from about 40% to about 80% of the separate second compression compaction force, so as to form an unbroken coffee tablet prior to use, andwherein there is a delay period of between 80-900 milliseconds after the first compression and before the separate second compression and no pressure is applied to the ground roast coffee during the delay period,to produce a coffee tablet having a density between 0.85-0.99 g/cm3, and exhibiting a hardness of at least 40 N (Newtons), a friability of no greater than 6%, andwherein the coffee tablet readily disintegrates when contacted with hot water during brewing in the ADC. 15. The coffee tablet of claim 14, which further comprises a flavorant. 16. The coffee tablet of claim 14, wherein at least one of the compressions has a compression dwell time of less than 75 milliseconds. 17. The coffee tablet of claim 14 further comprising instant coffee in an amount between about 4 wt. %-9 wt. %, based on the total amount of coffee in the tablet. 18. The coffee tablet of claim 14, wherein the tablet contains sufficient coffee solid to make only a standard serving of brewed coffee. 19. The coffee tablet of claim 14, wherein the coffee tablet has a volume less than about 3.2 cm3. 20. The coffee tablet of claim 14, wherein the tablet has a mass of about 1.9-3.5 g.
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