I was offered to purchase a bottle of what Olive Garden uses for their Sangria just this past Wed. It is a bottle of concentrate for 8 or 9 dollars that you also need a 1.5 litter of sweet red wine. I purchased a Riunite Lambrusco for 9.99 for the 1.5 litter bottle. The recipe also calls for water with the concentrate and wine.
On the concentrate bottle from Olive Garden there is a recipe for a glass or a batch recipe (yield 98 oz)
It is EXCELLENT!!!!! I highly recommend asking your Olive Garden if they will sell you a bottle, mine offered this up, I did not ask. I have been having a glass (or two)each night with dinner!
Hope this helps someone!!