The ornamental design for a jalapeño corecutter, as shown and described.
FIG. 1 is a top perspective view of a jalapeño core cutter showing my new design;
FIG. 2 is a front end elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a rear end elevation view thereof;
FIG. 6 is a right side elevation view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing the blade fastener heads on the sides of the handle in FIGS. 1, 3, and 6 are for illustrative purposes only and form no part of my claimed design.