Jack Horner Pudding

This was something I found in a WWII recipe booklet (reprinted) - see below. I was interested in cooking pastry in a saucepan. See below for comments

suet
self raising flour
water
fruit (Possibly with sugar)

Equipment

mixing bowl
spoon or fork
saucepan

time cooking: 35-40 mins

preparation time:
mixing

Measure out the suet and in the bowl and mix. The amounts can vary, but there should be twice as much flour as suet.
Add a little water and mix into a soft dough
Put the fruit, plus some water, and perhaps sugar, in a sucepan. Pat out the dough into a rough circle the size of the saucepan, and put the dough on top of the fruit.
Cook for 35-40 minutes. Serve with .

Jack Horner Pudding

This did work, mostly. No, I didn't use grated potato! I used the proportions for normal suet pastry. The potato seems to be substituting for some of the fat, which is a bit odd.
I used plums (as it's a Jack Horner pudding). The one problem that didn't occur to me is that you can't stir the fruit (as it's under the pastry) so it stuck to the bottom of the saucepan and got a bit burnt.
Little Jack Horner
Sat in the corner,
Eating a Christmas pie;
He put in his thumb,
And pulled out a plum,
And said, "What a good boy am I!"