>because they are just adding additional orange juice back This is my understanding as well. I believe it has more to do with creating consistency with the pro

>because they are just adding additional orange juice back This is my understanding as well. I believe it has more to do with creating consistency with the product because different fruit (and even the same fruit from different lots or seasons) will vary in qualities like acidity, brix, color etc. and consumers expect consistency. It actually becomes a fairly interesting operations research problem on how to blend various lots to arrive at a consistent product.