To me, my interpretation was closer to groceries. I buy bread, eggs, or chips. At the register, each item shows up as one line item, but there are many servings in each container.

I can't think of a good way to make the text more clear as I think anything can be subject for a different interpretation.

i.e. "Successfully synth # number of times with Level #~# <craft> recipes."

But that sounds a bit cumbersome to me and I think still could be interpreted differently.