In a small sauce pot add wine, hotsauce, green onion, sugar and squeezed grapefruit stiring constantly on high heat until boil.

In a small bowl make a slur (cornstarch and water). Mix together slur till its a milky form.

Reduce fire and slowly add slur to pot while stiring.

Sauce will become thicken as you pour and stir.

Let sauce simmer until desired thickness

Add pinch of salt and discard green onion