Summer Berry Danish

Ingredients

• About 1 pound prepared all-butter puff pastry, thawed if frozen
• 1 egg
• 2 teaspoons water
• Mixed summer berries, for serving
• Edible flowers, for serving
• Powdered sugar, for serving
• 1 pound mixed summer berries, rinsed and well dried
• 3/4 cup sugar, more if needed
• 1 teaspoon freshly squeezed lemon juice, more if needed
• 1 cup whole milk
• 2 fresh bay leaves
• 3 tablespoons sugar, divided
• 2 egg yolks
• 2 tablespoons cornstarch
• Pinch salt
• 1 1/2 tablespoons unsalted butter, cut into pieces, softened