Porter Cake | Chopped

Ingredients

• 1 1/2 cups porter beer
• 1 1/2 cups raisins
• 1 cup sultanas
• 1/2 cup candied mixed peel, chopped
• 1 cup unsalted butter, softened
• 1 cup dark brown sugar
• 4 eggs
• 2 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon ground mixed spice
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon salt
• 1 teaspoon vanilla extract
• 1/2 cup chopped walnuts