The ornamental design for an edible icecreamcornet, as shown and described.
1. Edible ice cream cornet
1.1: Front
1.2: Top
1.1: Side perspective showing the cone rim, side wall, curved tip and prebaked dark cookie pieces embedded within the baked dough; 1.2: Top perspective showing the cone rim, parts of the side wall, curved tip and prebaked dark cookie pieces embedded within the baked dough cavity.
No claim is made to the depth of the embedded cookie pieces aside from the two shown protruding to the left of the cone in the Figures and the four protruding to the right of the cone in the Figures.