The ornamental design for a single-cup brewer, as shown and described.
FIG. 1 is a perspective view of our new design for a single-cup brewer;
FIG. 2 is a top view of the single-cup brewer;
FIG. 3 is a typical side view elevation of the single-cup brewer, excluding the broken lines. The side view is the same at any point around the periphery of the article;
FIG. 4 is a cross-sectional view of the single-cup brewer taken along lines 4-4 of the side view elevation of FIG. 3; and,
FIG. 5 is a bottom view of the single-cup brewer.
The dashed broken lines in the drawings illustrate portions of the single-cup brewer that form no part of the claimed design. The dash dot broken lines in FIG. 3 illustrate a line along which a cross-sectional view is taken. The oblique dashed lines in FIG. 4 illustrate a cross section of transparent material.