Veronica's Fruit Cake

I was looking through a very old exercise book of mine and came across this recipe. It was given by my dear friend, Veronica, who said that whenever she made the cake, people are always asking for the recipe. So for you fruitcake fans out there, here's the recipe:

Ingredients:
8 oz (228g) self-raising flour, sifted
375g mixed fruits
1 tin evaporated milk (not condensed milk!)
3 1/2 to 4 oz (100g to 113g) of soft brown sugar
250g butter

Method:
1. Preheat oven to 170C.
2. Cream butter and sugar until light and fluffy.
3. Mix a little of the flour with the mixed fruits to loosen up the mixed fruits. Then add loosened mixed fruits to butter/sugar mixture.
4. Slowly add in evaporated milk while mixing.
5. Lastly, fold in the flour.
6. Put in the oven for 1 hour 20 minutes.

A note on evaporated milk. In Malaysia, when we speak of evaporated milk, we think of the standard 400g can which is widely available. Any cans smaller than that doesn't come to mind because they're not so easily available. So I'm pretty sure Veronica means the 400g can type.