Salt Roasted Peanut Cake

Ingredients

• 1/2 cup sugar
• 1/2 cup whole milk
• 1/2 tsp salt
• 1/2 tsp light corn syrup
• 1/2 Tbsp salted butter
• 1 cup (205g) peanut butter
• 1 cup (400g) sugar
• 5 eggs, separated
• 2 cups (220g) cake flour
• 1 Tbsp defatted peanut flour
• 1 tsp baking soda
• 1 1/2 tsp salt
• 1 cup (240g) buttermilk, at room temperature
• 1/4 cup water
• 1/4 tsp instant coffee powder
• 1 cup (245g) creamy peanut butter
• 4 oz (1/2 package) cream cheese
• 2 cups (250g) powdered sugar
• 2 tsp milk
• Pretzel salt
• Optional: Jimmies
• Optional: Crushed peanuts