This is something I came up with when I was in the need of pomegranate molasses. I was unable to run to the store for pomegranate juice but I had a bunch of frozen blueberries. Blueberry juice and pomegranate juice taste quite similar so I figured it would work!
1 1/2 cups of fresh or frozen blueberries
1 cup of water
3 tbsp of sugar (4 tbsp of honey)
2 tbsp of lemon juice
Place juice in a saucepan and add the sugar and lemon juice. Bring to a boil and then reduce to a simmer.
Simmer for around 40 minutes or until the liquid is thick and syrupy.
You should have around 1/2 cup of molasses.