the food grade - I don't get it

I was wondering how is it possible to get a C+ from a recipe analyzer for brewed organic green tea mixed with orange juice (frozen concentrate, no sugar added). Can somebody please explain this to me? Thank you all in advance.

Orange juice is typically very high in sugar which could mean that the majority of the calories in your finished drink were coming from sugar.   The gradings are to be treated as a 'weighting' rather than a particular measure of unhealthiness.  So what the grade is suggesting is..... use this sparingly rather than to make up the bulk of your diet.   Which I'm sure is how you intend to drink it.

Thank you for your reply, it sure does make sense but it still kinda hard to accept that something as healthy and rich in nutrients as OJ or grapes (or any fruit with high sugar content) can get the same food grade as a piece of pastry or a candy or something of the sort.

Honestly I pay no attention to the food grading for exactly this reason.  It is too rigid for me.  To get a "good" grade something has to basically have no salt, no sugar, and no fat....no thank you!  lol  I just watch my caloric intake, fat grams, and try to get enough veggies, fruit, fiber and protein.

very true, I'm with you on this one :) but you know, its kinda irrational desire to 'be good' so you strive to get the best grade possible, like in school (its silly, I know) :))

Olive oil gets a 'B' for the same reason.  This doesn't mean CC is saying 'olive oil is a bad food' it means 'use olive oil sparingly'.   If you use orange juice sparingly as part of a balanced diet your overall grade will be an 'A'.