Cut the apricots and mix them into a puree and pour them in a casserole.
Add the gelling agent and the sugar. Make sure the heat is not more than 100 degrees Celsius. Cook it all for 1 hour.
Pour the mixture evenly in a rectangular dish and cover with a baking towel. Let it rest for 2-3 days.
Before cutting the marmalade make sure the dough is firm.
Cut small squares and roll them in the crystallizes sugar.
Place in the freezer before serving these small treats.