Name: Rosemary Shrager's Chestnut Pavlova Cake
Prep time: 60 min
Cook time: 250 min
Yield: 12
Cuisine: British
Ingredients: For the meringue; 5 egg whites (large eggs); 170 oz caster sugar; ½ tsp vanilla essence; ½ tsp raspberry vinegar; ½ tsp cornflour; For the sandwich mixture; 100g soft brown sugar; 50ml water; 4 egg yolks; 250g unsalted butter; ½ small tin chestnut puree (sweetened); For the topping; 400ml double cream; ½ tin chestnut puree; ½ tsp vanilla essence; 1 tbsp icing sugar; 100g walnuts