I don't have my Granny's recipe but I do think the one I made up is pretty close... apart from using gluten free flour (which I don't think existed back in Granny's day!)
The ingredients we used were:-
225g self raising flour (we used Dove's Farm gluten free)
pinch of salt
1 teaspoon mixed spice
110g butter (Granny used to use lard)
75g caster sugar
75g mixed currants
1 large egg beaten
Using a bowl, we mixed the flour, salt, spice and butter. We used a hand balloon whisk to get a breadcrumb-like texture (and this also 'saves' my ailing fiingers from too much effort)
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Once the dough came together and wasn't too wet or dry. We lightly pressed it out, then rolled to about 5-7mm thick. The dough was then cut in 5cm rounds.
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Heating the pan, the cakes were cooked - you can use a heated griddle, lightly buttered frying pan, or as we did in a ceramic coated frying pan (it worked very well.
Cooking till browned on one side, the cakes were flipped/turned and cooked on the other side (about 3 mins a side... but depends on heat, thickness and the level of 'cook' you're aiming for).
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Once cooked on both sides, the cakes were removed, placed on a plate and drizzled lightly with caster sugar.
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Eaten warm, they were delicious. They were also very tasty with a cup of tea and, surprisingly, kept well in an airtight container.