Bring 3 cups of water to a boil and add black loose tea.
Remove from heat and steep for 5-10 minutes. Strain tea.
Add sugar and stir to dissolve while tea is warm. Set aside to cool.
Add lemon, strawberries, and oranges to a pitcher.
Pour red wine over fruit and stir.
Add lemonade, Limoncello, and sweet tea and stir together.
Refrigerate 2-4 hours or overnight.
Pour over ice into glasses.
The secret to getting a really nice flavor is to allow the ingredients to infuse together overnight in the refrigerator. Most Sangria recipes add a sweetener of some type, sugar or honey. But since the sweet tea and the lemonade are already sweetened you don’t need anymore.