In a bowl, mix the flour with all the other ingredients up to and including the salt. Add the yeast and all the other ingredients up to and including the clementine zest, mix well. Beat with a wooden spoon or work the mixture using the dough hook on a hand mixer until it becomes smooth and starts to bubble. Transfer the dough to the prepared tin, smooth down. Cover and leave to rise at room temperature for approx. 1 hr. until it reaches just below the top of the tin.
Approx. 25 mins. in the centre of an oven preheated to 180°C. Remove, leave to cool, tip out onto a rack, rinse out the cake mould.
In a pan, bring the black tea to the boil along with the cinnamon stick and clementine zest. Remove the pan from the heat, leave to infuse for approx. 5 mins. Add the honey, clementine juice and Grand Marnier, mix together and strain. Pour half of the liquid into the cake mould, return the warm Savarin to the tin. Prick the surface all over with a wooden skewer, carefully pour over the rest of the liquid. Cover and leave to infuse for approx. 30 mins. until all the syrup has been absorbed.
Clementine and date salad
Slice off the top and bottom of the clementines, then peel all round the fruit down to the flesh, cut into approx. 5 mm slices, place in a bowl with the dates and Grand Marnier.
Tip the savarin out onto a plate just before serving, place the clementine and date salad in the middle, decorate with crème fraîche.