Blueberry Yogurt Cake [ENG SUB] 

★Ingredients (18cm round tin)
Melted butter　30g (You can use oil instead if you don't have it, but it may change the flavor a bit.)
Yogurt　400g
Flour　100g
Condensed milk　2 tbsp (If you don't have it, you can use honey instead or add more sugar)
Sugar　70g
Vanilla extract　Appropriate amount
Frozen blueberries　Appropriate amount (You can use other fruits instead.)
Egg 2