Ok so my garden is basically a watermelon patch right now, so I was interested in this as it uses one whole mini watermelon, but this says the juice lasts one day, the drink once clarified lasts months.

I guess I could freeze the rest, or simply make less, or since the final version keeps well, make more of that - but why does the recipe say to make so much more of the watermelon juice than one would use, if it doesn't keep?

Has anyone on here done milk clarifying, is it very fussy?