Blueberry

• 2 eggs
• 1 1/2 blueberries (fresh)
• 1 3/8 cans sugar
• 1 low-fat milk
• 250 gr all purpose flour
• 65 gr sugar (optional)
• 65 gr butter
• 60 ml lemon juice (fresh)
• 9 gr baking powder
• 1 gr salt