Sugar to taste(around 1/4 cup for every cup of juice, depending on sweetness of your oranges)
Juice blood oranges and pass juice through fine mesh sieve to remove seeds and big lumps of pulp. Place sugar in a small saucepan and saturate with juice. Heat, stirring frequently, until sugar is dissolved. Add to remaining juice, stirring to incorporate. Let cool, then carefully pour into your popsicle molds and freeze.