4: Squeeze the clementines, you should get 250 ml of juice. Pour the juice into a small saucepan and bring to 60°C (140°F), but do not boil.
5: Pour the hot juice over the sugar-egg-zest mixture and mix well.
6: Pour this preparation through a fine sieve into a saucepan, you must remove all the clementine peel.
7: Place this pan over low heat, and stirring constantly with a maryse or whisk, bring to a boil.
8: As soon as the boiling point is reached, remove from heat and add the wrung out gelatin...
9: ...mix well.
10: Cover the pan and plunge it in a bottom of cold water, stick a thermometer in the preparation.
11: When the temperature has dropped to 40°C (100°F), add 70 g butter in cold pieces...
12: ...then mix it all together.
13: Your clementine cream is ready. This is a preparation that is usually poured into a mold, or into an already baked pie crust, before chilling it to set.
Remarks
This method can be used with other citrus fruits: grapefruits, oranges, lemons... If you want to color your creamer (to accentuate the orange in particular) add coloring in step 9.