Strawberry Shortcake Cupcakes

Bahan-bahan (15 porsi)

• 1 and 1/2 Tablespoons (11g) cornstarch
• 1 and 1/2 Tablespoons (23ml) warm water
• 2 cups (about 300g) diced strawberries
• 6 Tablespoons (75g) granulated sugar
• 1 teaspoon lemon zest
• 1 and 2/3 cups (209g) all-purpose flour (spooned & leveled)
• 1 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup (200g) granulated sugar
• 1/2 cup (8 Tbsp; 113g) unsalted butter, melted and slightly cooled
• 2 egg whites*
• 1/4 cup (60g) sour cream or plain yogurt*
• 3/4 cup (180ml) whole milk*
• 2 teaspoons vanilla bean paste (or extract, see Note)*
• 1 and 1/2 cups (360ml) cold heavy cream or heavy whipping cream
• 3 Tablespoons (38g) granulated sugar
• 1 teaspoon vanilla bean paste (or extract, see Note)*
• reserved 1/2 cup of strawberry filling
• optional for garnish: strawberry slices and fresh mint