• In a small bowl, mix together the water, caster sugar and yeast. Set aside for 10 minutes or until yeast begins to foam.
• In a large bowl or bowl of a stand mixer, mix together the flour, salt, mixed spice, cinnamon, raisins, mixed peel and orange zest. Add the eggs and yeast mixture and combine using either your hands or a dough hook.
• Knead the dough for a further five minutes before slowly incorporating the butter. Continue to knead until dough becomes glossy and smooth. Leave to rest for two hours, or until doubled in size.
• Once dough has doubled in size, cut into 12 even portions (though you could make them smaller portions if you prefer). Shape into balls, cover loosely with clingfilm or a damp tea towel and leave to prove for a further 2 hours.
• Fill a large heavy bottomed pot with at least 4cm (2 inches) of oil and place over a medium to high heat until the oil reaches 180°C (360°F) – I used an electric deep fryer which has an automatic frying setting.
• While the oil heats up, take a cooling rack and place two layers of paper towels on top. Combine white sugar and cinnamon on a tray.
• Gently lower the doughnuts two at a time into the oil and fry until golden brown on one side, this should take around 2–3 minutes. Carefully turn the doughnuts and fry for an additional 2–3 minutes. Once cooked, lift the doughnuts from the oil using a slotted spoon, give them a quick shake to get rid of excess oil, then toss immediately in cinnamon and sugar (the sugar sticks to the wet oil so you need to act fast). Place on the cooling rack lined with paper towels. Repeat with remaining doughnuts.

For the filling:

• Once doughnuts are completely cool, whip cream and vanilla until soft peaks form.

To assemble:

• Make a large cut into the top of each doughnut and fill with whipped cream and a dollop of marmalade.