Orange Meringue Pie

• 11 round
• 5 egg whites
• 5 egg yolks
• 1 1/2 orange zest (grated)
• 1/2 overhang all around
• 475 ml orange juice (fresh)
• 300 gr sugar
• 250 gr all purpose flour
• 240 ml boiling water
• 130 gr vegetable shortening