Wash lemon hot, grate dry and grate half of the peel thinly. Heat milk, butter and 50 g sugar until the butter has melted. Mix the milk mixture, breadcrumbs and lemon rind. Leave to swell for 10 minutes. Separate the eggs and quickly stir the egg yolks into the prepared mixture
Place in a greased casserole dish (approx. 1.5 litres capacity) and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 20 minutes
Select the raspberries and bring to the boil slowly. Mix starch, vanillin sugar and 1 tablespoon sugar. Stir with apple juice until smooth, bind raspberries with it, bring to the boil again. Spread into the casserole dish. Beat the egg white until stiff, add the remaining sugar. Pour the beaten egg whites into a piping bag with a perforated spout and spray the tuffs onto the raspberries. Bake in a preheated oven (electric cooker: 150 °C/ convection oven: 125 °C/ gas: see manufacturer) for approx. 20 minutes. Serve hot or cold