Dissolve gelatin in 1 cup hot water.
Add seasonings and vinegar.
Chill until mixture begins to set.
In the meantime peel cucumbers and cut into halves lengthwise.
Force cucumbers through grinder or shred fine; 2 large cucumbers make about 1 cup shredded.
When gelatin is partially set, stir in cucumbers and some chopped mint.
Pour into shallow dish or 8-inch square pan and chill until set.
To serve, cut into cubes and arrange on greens.