Chocolate Gourmand: Lemon Cake

Ingredients

• 1/2 pound unsalted butter, room temperature
• 2 cups sugar
• 4 large eggs, room temperature
• 1/3 cup lemon zest (about 8 Meyer lemons)
• 3 cups flour
• 1/2 teaspoon baking soda
• 1/2 teaspoon baking powder
• 1 teaspoon salt
• 1/4 cup lemon juice
• 3/4 cup buttermilk, room temperature
• 1 teaspoon vanilla extract
• 1/2 cup lemon juice
• 1/2 cup sugar
• 1 pint fresh blueberries