Mix 125g of the weighed flour with the yeast and sugar in a large mixing bowl or the bowl of an electric mixer and make a well in the centre. Mix the two whole eggs with the water and pour into the well.

Using your hands or a dough hook, mix the flour into the liquid to make a smooth thick batter. Sprinkled a little of the remaining weighed flour over the top of the batter to prevent a skin forming then leave in a warm place for around an hour or until the batter is very bubbly. (Mine expanded but didn't go bubbly. It was fine).

Stir in the egg yolks, vanilla and grated zest using your hand or dough hook. Gradually work in 175g flour plus the salt to make a soft sticky dough.

Next add the softened butter and work in with your fingers or the dough hook on a slow speed. Beat until the butter is incorporated with no streaks.

Turn out the dough onto a floured surface and knead thoroughly by hand for ten minutes (or use the dough hook for 3-4 minutes) working in the remainder of the weighed flour to make a satiny soft pliable non-sticky dough. Depending on the flour, you may not need it all or you may need a little more. (Mine was fine).

Cover the bowl with cling film (I used a tea towel as well, mainly because it feels "rustic") and leave to rise at room temperature until doubled in size, probably 2 to 2.5 hours. Don't leave in a very warm place as the butter will melt.

Next uncover the dough and punch down to deflate. Cover again and let it double in size again (1 to 1.5 hours although I left mine 2 whilst we had Sunday lunch).

Meanwhile combine the sultanas with the chopped peel and chocolate chips. Stir in a teaspoon of flour to stop it clumping in the dough.

Prepare the tin by lining with parchment paper. The paper should extend 5cm higher than the height of the tin.

Punch down the risen dough again and turn onto a floured surface; sprinkle the fruit and chocolate mixture on top and work into the dough gently until evenly distributed.

Shape the dough into a ball and gently drop into the prepared tin. Cut a cross into the top. Lay a sheet of clingfilm loosely over the top of the tin and leave for another hour or so until doubled in size again.

Towards the end of the rising time, preheat the oven to 200c / 400f / gas 6. When ready to bake, melt 15g of the butter for finishing and brush it over the risen dough. Put a knob of butter in the centre of the cross.

Bake for 10 minutes or until just starting to colour, then brush again with melted butter. Reduce the temperature to 180c / 350f / gas 4 and bake for a further 40 minutes until a good golden brown and a skewer inserted to the centre comes out clean. (My loaf was going very brown after 30 mins and I had to cover with foil to stop it burning).

Remove from the oven and place the tin on a wire rack. Allow to cool for a few minutes before teasing it out of the tin. If your crust is fragile allow to cool further before removing from tin.

Cool completely before slicing.