Pad (1; 101; 201; 301; 401; 501 and/or 601) for use in a coffee machine (52; 552) for preparing a beverage for obtaining at least one part of a single beverage serving which pad (1; 101; 201; 301; 401; 501 and/or 601), for use in the coffee machine (52; 552), is adapted to receive an aqueous fluid that is supplied under pressure to the pad (1; 101; 201; 301; 401; 501 and/or 601) so that the fluid is forced through the pad (1; 101; 201; 301; 401; 501 and/or 601) for obtaining the at least one part of the beverage serving that then exits the pad (1; 101; 201; 301; 401; 501 and/or 601), wherein the pad (1; 101; 201; 301; 401; 501 and/or 601) includes a covering defining an interior space that is filled with a beverage preparation product (6; 106, 206; 306; 405; 506) for preparing the beverage wherein the beverage preparation product (6; 106, 206; 306; 405; 506) includes a product including ground coffee extractable with an aqueous fluid, the pad (1; 101; 201; 301; 401; 501 and/or 601) containing 5-10, preferably 6-9 gram, of roast and ground coffee, wherein the covering comprises a flexible first sheet (8; 108; 208; 308; 408) and a rigid shell (10; 110; 210; 310; 410; 710), wherein the first sheet (8; 108; 208; 308; 408) and the shell (10; 110; 210; 310; 410; 710) are connected to each other around their perimeter edges (11, 13; 111, 113; 211, 213; 311, 313; 411, 413; 711, 713), wherein the shell (10; 110; 210; 310; 410; 710) is equipped with only one outlet opening (12; 112; 212; 312; 412), wherein the pad (1; 101; 201; 301; 401; 501 and/or 601) is further equipped with a second sheet (22; 122; 222; 322; 422) that is positioned on a bottom (16; 116; 216; 316; 416) of the shell (10; 110; 210; 310; 410; 710), wherein the second sheet (22; 122; 222; 322; 422) is located between the beverage preparation product (6; 106, 206; 306; 405; 506) and the shell (10; 110; 210; 310; 410; 710) and wherein the first sheet (8; 108; 208; 308; 408) and the second sheet (22; 122; 222; 322; 422) each form a filter that allows an aqueous fluid, including water, and the beverage to pass and that forms a barrier for the beverage preparation product (6; 106, 206; 306; 405; 506) so that, when in use an aqueous fluid under pressure is supplied to the first sheet (8; 108; 208; 308; 408) of the pad (1; 101; 201; 301; 401; 501 and/or 601) the fluid flows through the first sheet (8; 108; 208; 308; 408) to the beverage preparation product (6; 106, 206; 306; 405; 506) so that the beverage is formed which beverage then flows through the second sheet (22; 122; 222; 322; 422) and via the at least one outlet opening (12; 112; 212; 312; 412) leaves the pad (1; 101; 201; 301; 401; 501 and/or 601), characterized in that the outlet opening (12; 112; 212; 312; 412) has a substantially circular shape with a diameter within a range from 0.88 to 0.94 mm for passing the beverage substantially unrestricted, wherein the outlet opening (12; 112; 212; 312; 412) is positioned centrically in the bottom (16; 116; 216; 316; 416) of the shell (10; 110; 210; 310; 410; 710), and has a smallest through-flow area in a direction, in use, perpendicular to a beverage flow through the outlet opening (12; 112; 212; 312; 412) within a range from 0.61 to 0.69 mm 2.