Bill T - I understand your logic behind that. Fortunately this is the first food I've come across that needed such a complicated set of math skills. I'll have to remember that for the next time something crops up that I can't calculate out by volume.

Glenda: thanks. That's good to know. My reasoning isn't for temptation. It's for waste. I'm not a big whipped cream fan and only have it very occassionally, so would like to make just a bit at a time