Mixed Berry Hand Pies

Dough

• 14 oz all-purpose flour
• 8 oz unsalted butter, chilled, cubed (½ in.)
• 1 pinch salt
• 2 oz ice water

Filling

• 4 oz strawberries, hulled
• 4 oz blackberries
• 2 oz sugar
• 1 tsp lemon juice

Assembly

• whole milk, to brush
• turbinado sugar, to sprinkle