Summer Orange Cake - Tort Diplomat

"This is a cool refreshing summer cake. Recipe originates from my country - Romania. The cake is called "Tort Diplomat" and it can be made with other fruits as well. The cream in this cake has a mousse like texture and it is very light and fluffy."
photo by Violet photo by Violet
photo by Violet
photo by Violet photo by Violet
Ready In:
7hrs 15mins




  • Coat an 8 or 9 inch pan with oil and dust with flour or use cake release. Preheat oven to 325 F degrees.
  • Making the Cake: Mix eggs and sugar in the mixer till it doubles in volume.
  • Add the oil and mix it on medium high, then add the flour, orange zest, and the baking powder mixed with the lemon juice. Mix or beat for 2-3 more minutes.
  • Poor batter in prepared pan and drop the pan gently on the table to release the big bubbles. Bake on middle rack for 45-55 min and tooth pick inserted comes out clean.
  • Let it cool in the pan for about 10 min and invert it to a cooling rack to cool completely.
  • Preparation of the Cream:

  • Prepare custard first. Mix together with a spoon the hot water and the gelatin in a small bowl till the gelatin dissolves.
  • Whisk 5 egg yolks, milk, sugar,flour, and vanilla in a pan till is combined and no lumps are present. Place on low heat and cook till it thickens. Let it get to a couple of boils.
  • Remove from the heat and let it cool for about 10 min stirring occasionally to prevent a skin forming on top of the custard.
  • Meanwhile, peal and slice 3-4 oranges (thin even layers) and cube the rest of the oranges.
  • Arrange the orange slices on the bottom and sides of the pan to preference.
  • After 10 min mix the gelatin mixture into the custard till it totally dissolves.
  • Beat the heavy whipping cream almost stiff peaks.
  • Once the custard is cold, add one third of the custard to the whipped up cream, mix it well and add the remainder custard in two parts.
  • Bring the mixer to med high and mix well.
  • Put a layer of the custard mixture on top of the orange slices and the side of the pan, place a cake layer that has orange juice poured on with a spoon, place another layer of custard mix, cut up oranges and lastly the second layer of cake that has orange juice on it.
  • If you have 3 layers of cake you can use them all.
  • Make sure you do not cover the last layer of cake with the custard mix. That will be the bottom of the cake.
  • Cover the whole pan and cake with saran wrap (see image 8) and refrigerate at least 4-6 hours ( I usually chill it over night).
  • When it is time to serve, remove the wrap and invert the cake to a platter or cake board. Finish removing the other wrap that is now on top of the cake.
  • Use a serrated knife to cut through the orange slices while holding the oranges gently -- so you won't end up with a mess.

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I really enjoy baking, cooking and mostly cookie decorating.
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