50 g  Sugar, castor
2 tb Corn flour
1 tb Plain flour
500    Milliliters milk
4    Egg yolk
25 g  Butter
1/2 ts Vanilla

Blend the caster sugar, cofnflour, plain flour and milk together in a
1.5 litre bowl, mixing well with a whisk. e at 100% (high)
for 7 – 7.5 minutes until thick, stirring vigorously with a hand
whisk every 2 minutes Lightly beat the yolks in a separate bowl and
mix in 6 tablespoons of the hot custard. Blend thoroughly, then stir
the yolk mixture into the remaining custard. Microwave for a further
1-2 minutes or until thick. Beat in the butter and vanilla
flavouring, then cover with cling film or greaseproof paper. Leave to
cool