In a saucepan, mix red wine with spiced chai tea concentrate. Simmer mixture for 15–20 minutes. Add the sugar, stirring until dissolved. Simmer for an additional 10–15 minutes to reduce to desired thickness. Remove from heat, strain, and let cool. Transfer to a sealed container and refrigerate for up to a month. The syrup can also be used as a topping on ice cream, over whipped cream and waffles, or enjoyed in your morning coffee.