Without knowing how much the 1/2 cup of mushrooms on the Atkins list weighs
there's no way to compare them. I personally don't think the Atkins gram
counter is as accurate simply because it doesn't give enough info. The USDA
site gives multiple choices and each of those choices gives a weight in
grams which is really helpful for solid foods that don't fit nicely in
measuring cups. The Atkins list doesn't even specify if that 1/2 cup is
chopped, sliced, or whole.

Just my opinion.

Since you're just starting out and don't know what you can and cannote eat,
I would use whichever is higher to be on the safe side.
-
Peter
http://users.thelink.net/marengo

This is one of the things that I think make calorie/carb/protein
counting merely an estimate, no matter how good you are.

Obviously every product is different. Even different grades/source of
the same beef cut will have variation, so anything you see is an
average from a specific sampling.

WHenever possible I use the manufacturer's label as the source of
info. However I just saw a Frank's Natural Marinara sauce online that
said 1 tbsp = 1 carb. Incredibly low considering tomato content. And
it wasn't labelled a sugar-free or low-carb product. I couldn't read
the ingredients online though. Furthermore the label had this

80 calories, 72 cals form fat
Fat - 4.5 g (which is 41 calories from fat, not 72)
carb - 1 g
Protein - 1 g

I'm assuming the 4.5 is a typo and it should be 7.5 (which at least
bring it to 67.5 cals. The remaining five could be split amongst
fractionals.

I think the USDA has greater granularity. They breakdown everything
for every product. They give multiple quatities and varieties (such as
shitake). They also cover measuring meat raw versus after they've been
cooked, fried, baked, broiled, steamed, etc. They estimate the cut of
fat 0', 1/8", 1/4", 3/8", 1/2", and some grades of beef (choice,
prime).

Whatever you choose it is likely to be off from what you actually eat
(especially since beef fat drained away or left on the plate can cut
calories tremendously)

DiGiTAL_ViNYL (no email)

Personally I use the package info of the product.

Myway

Atkins carb counter booklets and carb counts for his recipes have been
notorious around here for years for lots of errors and typos.  One recipe
count was off by almost 30 grams (Atkins fudge in 1995 New Diet Cookbook).

I expect the carb counters and recipe counts on the Atkins site would be
just as sloppy.  If you need something more portable than the USDA site,
pick up a paperback of Corinne T. Netzer's "Complete Book of Food Counts"

There are lots of different species of mushrooms.  They probably vary in
carbs.

Cubit
308/283/165