I’ve just received a couple cases of clementines which are approaching the end of their life.
I’ve never cooked with them, normally I just peel and eat them. I’m not sure if I’m up to the task of eating all these in the next few days. So if you’ve got some tips on something I could do to make them last longer I’m all ears
Marmalade gets my vote as well.
Sorbet would be nice.
You could also try your hand at arancello, which is just limoncello using oranges. https://www.foodnetwork.com/recipes/giada-de-laurentiis/orangecello-recipe-1922221
Cheong could also be nice. You would use equal parts by weight thinly sliced clementines and sugar (or honey). Mix the sliced clementines with half of the sugar, stuff into a sterilized jar, then top with the remaining sugar. In a week the sugar should turn into a really tasty syrup. This can be used to make sodas, Korean tea, etc.
Going in the other (savory) direction, you could salt cure them. https://www.foodnetwork.com/recipes/jamie-oliver/salted-preserved-lemons-recipe-1955868 They would be great in middle eastern dishes.