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1
Split the sponges in half then spread each half thinly with raspberry jam.
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2
Sandwich each half back together and cut into quarters.
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3
Place in the base of three and a half pint (2 litre) glass trifle bowl.
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4
Sprinkle the sherry over the sponges and spoon over the partially thawed raspberries and their juice.
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5
Roughly crush the ratafia biscuits and sprinkle over the raspberries.
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6
Chill for 3-4 hours.
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7
Place the milk and vanilla pod in a small pan and slowly bring to just below boiling point.
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8
Transfer to a heatproof jug and leave to infuse for 10 minutes.
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9
Remove the vanilla pod from the milk.
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10
Place the egg yolks, cornflour and sugar in a bowl and whisk together.
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11
Whisk in the milk, then strain the liquid back into the rinsed pan through a fine sieve.
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12
Cook over a gentle heat , stirring constantly until the custard starts to thicken, being careful not to allow to boil.
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13
Cook gently for two minutes unit the custard is a thick pouring consistency.
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14
Quickly pour the custard into a cold bowl to prevent further cooking.
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15
Sprinkle the surface with a thin coating of caster sugar to prevent a skin forming.
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16
Set aside and leave to cool.
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17
Spoon the cold custard onto the raspberries in the trifle bowl, spreading to the edges with a palette knife.
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18
Gently whip the cream until it nearly holds its shape, then spoon three quarters of it on top of the custard and carefully spread to the sides of the bowl.
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19
Whip the remaining cream until it holds it shape.
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20
Pipe swirls of cream around the top of the bowl and decorate with flaked almonds and cherries, silver dragees or raspberries.