Take the frozen fruits, the amount you wish to use for this recipe, out from the freezer, and let them thaw out in a bowl at room temperature
Sponge cake - follow the step by step instructions in my Sponge Cake recipe
I used the same egg - flour-sugar ratio ( 1 egg - 20 g flour - 20 g sugar) that I use in my sponge cake recipe, I just used this time only 6 eggs, so I needed 120 g flour and 120 g sugar.
Cream sauce
Mix sauce ingredients, and adjust the sweetness and sourness to your taste. I like a nice, balanced flavour, not too sweet, not too sour.
Preparing the dish
Cover a large glass or ceramic baking dish with a layer of inch-sized sponge cake pieces. I used an 20 cm x 28 cm (8" x 11") glass dish.
With a small ladle or spoon pour half of the sauce (third if you make three layers) on the sponge layer. Use the spoon to spread it evenly.
Spread evenly half of the berries (third if you make three layers) on the sponge cake pieces
Repeat the layers again (once or twice depending on the size of the baking dish) - sponge cake pieces, sauce and finally berries.
Cover it and refrigerate for a couple of hours to chill, then it is ready to serve. Enjoy!
Notes
Use store bought sponge cake if you don't have the time to bake your own.Use any kind of frozen fruits, mix them as you wishUse fresh fruits if you wish, but I found that frozen berries just make this dish perfect.Although I have not tried it yet, but you can substitute the sour cream with yogurt, especially with mediterranean yogurt.Make it the night before, it is going to taste even better.