Pistachio Christmas Stump Cake

Ingredients

• 175g Pistachios
• 300g Flour
• 25g Cornflour
• 1/2 Tsp Baking Soda
• 1 Tsp Baking Powder
• 113g Salted Butter
• 105g Vegetable Oil
• 330g Sugar
• 3 Large Eggs
• 1 Tbsp Vanilla Extract
• 1 Tsp White Vinegar
• 336g Buttermilk
• Green Food Colouring (if needed)
• Pistachio Cream (for filling)
• 270g Dark Chocolate
• 270g Double Cream
• 3 1/2 Tbsp Honey
• 70g Butter (Cubed)
• 200g Dark Chocolate
• Wafer Paper (Optional)