Not enough sultanas and it should really be suet pastry. But anyway who's going to take dessert criticism from the people whose idea of haute cuisine is something called a Mud Pie

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In case anyone is still interested IMO the thing about mixing epoxy is to keep the proportions correct and mix for long enough. A quick stir round is not enough. I generally prefer to mix it on something flat rather than in a cup. In a cup it heats up and that reduces the working time.
Steve