Mamma's Key Lime Pie

Crust
16 graham crackers, crushed fine
3 Tbsp sugar
1/4 lb butter

Mix together press into 9' pie pan.
Bake 350* 10 -12 minutes til lightly brown

Filling
4 x-lg egg yolks
1 14 oz can condensed sweetened milk
1/2 cup fresh Key Lime juice(12 Key limes)
2 tsp grated lime zest (green portion only)

Beat yolks til thick and light yellow.
Turn off mixer add milk, mix low speed, add half lime juice, mix well then add other half with lime zest. Pour into pie shell and bake 350* 12 minutes

Whip Cream Garnish
1/2 cup whipping cream
2 tsp sugar
1/4 tsp vanilla

Whip it and serve