Stir
1 teaspoon of the sugar and all of the yeast into the
lukewarm water. Leave to stand for about 10 minutes
until frothy.
Beat the egg yolks in a large bowl and
stir in the yeast mixture, salt and the remaining sugar.
Beat in half the flour and then gradually beat in the
softened butter, a little at a time. Knead in the
remaining flour to make a dough.
Turn out
the dough on to a lightly floured surface and knead well
until it is firm and elastic. Place in a lightly oiled
plastic bag and leave in a warm place until well risen
and doubled in size.
Turn
out the dough on to a lightly floured surface and knead
in the sultanas, raisins and mixed peel. Continue
kneading until the fruit is evenly distributed.
Place
the dough in a greased 18 cm/7 inch round cake tin and
cover with an oiled plastic bag. Leave in a warm place
until the dough rises to the top of the tin.
Remove
the plastic bag and brush the top of the dough with some
of the melted butter. Bake in a preheated oven, 200°C
(400°F), Gas Mark 6, for 20 minutes. Reduce the oven
temperature to 180°C (350°F), Gas Mark 4 and cook for a
further 20-30 minutes.
Remove from the tin and brush the
top and sides with the remaining melted butter. Serve
warm or cold, cut into thin slices.