Just four ingredients! I had fresh strawberries that were getting soft, so I froze them. I had a leftover single-serving cup of mandarin oranges in juice, so I froze that too. I placed the frozen strawberries and frozen mandarin oranges plus their juice into the blender with a bit of cold water. This is a recipe I just created tonight. I was going to add some frozen (from fresh) blackberries, but my bf had expressed his desire to use them to make a blackberry shake, and there weren't enough blackberries for us both to share. Oh well! I just finished making this right before I completed my recipe submission and imo it's really good! It's very refreshing and tastes fresh too. I used about a tsp of honey and it's perfect. This reminds me of a Dole Frozen Whole Fruit Bar, except it's drinkable. There are also some nice pieces of strawberry left in it that make this really pretty and yummy. Be careful, this really will give you a brain freeze! Lol. :) This really doesn't need blackberries in it, I think it's great as-is, but the blackberries would add a different flavor, depending on what you are after. This one tastes predominantly strawberry with mandarin orange sneaking as a great background flavor. Edited to add: I bet you can make this a Brain Freeze with a Kick by adding an ounce of your favorite plain or flavored vodka or plain or flavored rum to this. :D ETA: A clarification on the mandarin oranges. In most stores in the canned fruit and applesauce aisle, there are a variety of fruit companies that sell packages of single-serving, individually sealed plastic cups of mixed or single fruits in light syrup or juice. I had one of these single-serving plastic cups of mandarin orange sections in light syrup or juice that I needed to use up. I froze the entire cup and contents. The cup the mandarin sections were in stood up well to freezing. When I created this recipe, I opened up the plastic cup and dumped the frozen contents (sections and syrup) into the blender along with the frozen strawberries. I note this b/c there was some confusion with another reviewer. I'm sorry for not being more clear. :) If you cannot find these single-serve cups, and you don't mind opening a can of mandarin sections in light syrup or juice and putting them into a freezer-proof container and freezing solid, that will work too.