Pour the chilled evaporated milk into your mixing bowl. Place the beater into the bowl. Place the entire bowl into the freezer for 30 minutes.
While the evaporated milk in chilling, crush 12 graham crackers into crumbs.
Once the evaporated milk is removed from the freezer, whip it until very thick.
Slowly add the sugar. Add the lemon and lemon rind and whip again until very thick. Place half of the graham crackers into a 8x8 or 9x9 pan. Pour the evaporated milk cream over the graham crackers. Add the remaining crumbs on top.
Cover tightly and place in freezer until ready to serve.