Stone fruit tea cake

Ingredients

• 150 g plain flour
• 1/2  teaspoon baking powder
• 1/2  teaspoon salt
• 80 g caster sugar
• 80 g butter
• 2 eggs
• 1  tablespoon orange rind
• 1  tablespoon brown sugar or more if the fruits are sour
• 120 g strawberries
• 120 g blueberries
• 2 kiwi fruits
• 1  teaspoon vanilla