But regarding whether it’s fattening or not, I would think more depends on your TOTAL calories for the day, the week, & so on. You can fool yourself if you think that “this” serving isn’t all that much fat, but what else did or will you eat did you eat that day that also has fat in it. Do this sort of denial of accumulated fat day after day, year after year & pretty soon you’re likely to have a weight & or health problem, problem. Learning to measure one’s food isn’t difficult, but I’d bet that we’re too brainwashed with advertising that “taste” is what is “good” for us, vs. what is really nutrious, & so we think of measuring anything as a chore, or complicated or not needed. You are what you eat, so you choose. If this thinking is so far off, then why the obesity epidemic?

The point you make, though, is mathematical. I am sending this blog post to the Natural Math mailing list as an excellent example of using your math and physics knowledge to make everyday decisions – or, in case of some people, failing to make sensible decisions. Thanks!

While I’m sure the tart would taste great without the whipped cream I am certain that it would taste better. Sure there is an increase of calories, but I suspect that most of the calories come from the custard and crust.