A bit of math trivia, for anyone who's interested.
If you did OK in high school algebra, you might remember a calculator function that looks like "nCr". That function is used to find the number of r-element combinations possible from a n-element set ("out of N, choose r things; ex. 10-fruit combinations from 16 total fruit). This can be written as n!/(r!*(n-r)!). Refresher: n! = n*(n-1)*(n-2)*(n-3)...*1 (ex. 4! = 4*3*2*1 = 24). When you include repeatable choices, (like our nectar recipes!) this becomes ((n-1)+r)!/((n-1)!*r!), or in our case, (16-1+10)!/((16-1)!*10*), which is close to 3.3 million recipes!
(Information transcribed from Wikipedia "nCr" and "Combination" articles.)