Preheat the oven to 375 degrees Fahrenheit and grease a cake tin in preparation.
Cream together the butter and sugar with a wooden spoon or mixer until light and fluffy.
Place the clementine zest into the mixture.
Add one egg at a time ainto the mixture and mix thoroughly between each addition to keep the mixture light.
Gently stir in the cinnamon and paprika.
Fold in the four with a spoon only until there is no white left (do not overmix).
Add the milk and adjust if less or more is needed, folding very gently to combine.
Transfer the mixture to the cake tin and bake in the center of the preheated oven for 25 minutes.
Remove the cake from the oven and allow to cool completely before frosting.