Mango blackberry tart

I bought fresh blackberry from a farmer's market, but the taste is too sour not sweet at all, I don't want to waste it, So I mix blackberry with mango and mango jam and made mango blackberry tart.
a sweetness from mango and mango jam is good balance with this sour blackberry, It's good combo.

Ingredients :

- 1 ripe mango
- 1 1/2 cups fresh blackberry
- 2 tablespoon sugar
- 1/2 cup mango jam

Pastry :
- 1 3/4 cups all-purpose flour,sifted
- pinch of salt
- 1/2 cup butter / cold
- 1 teaspoon vanilla extract
- 5 Tbsp cold water
- 1 egg

Direction :
Preheat oven on 350 F
Peel and cut mango in cube, drain blackberry with cold water,set aside

For the pastry, place the flour,salt,butter and vanilla extract in a food processor and process until the mixture resembles fine bread crumbs, add just enough water to bind to a soft but not sticky dough.
Roll the dough by square not too thin. brush the edge with egg wash

Spread the dough with mango jam and topping with mango cube and blackberry and sprinkle with sugar
bake in the preheated oven for 40-45 minutes or until the crust looks brown, cool down and ready to serve.