I found my White SHIRATAKI Noodles.  (I think.)

They just made a very convincing plate of SPAGHETTI!

Noodles are <1 carb per serving and 7 servings per 7 ounce bag.

From what I have read, all the carbs are fiber.

The bag says "YAM NOODLE"  made by "Shirakiku"

$1.29

The noodles have a white gelatinous look.  Chews up like real spaghetti
without cooking, except they have a mild rubbery chew effect.  Cooking might
change this.  I really have no idea.

The maker adds a bit of seaweed powder to the bag giving it a mild seafood
smell.  Placing the noodles in a colander and washing under hot tap water
for several minutes removes almost all of the smell.

Noodles are about two feet long and have a small diameter.

I poured on my low carb spaghetti sauce and nuked it for a few minutes.  I
let it sit for 50 minutes.  I have read the noodles absorb whatever
sauce/flavor is around them.  I assumed it takes time.  Maybe I should have
let them soak in sauce overnight, but I am not that patient.  I added
generous Romano and Parmesan grated cheese.

My sauce was "Pastalia Marinara."  It has neither sugar nor corn syrup in
the ingredients.  7 carbs per serving and 6 servings per 25 ounce jar.

I found the noodles at an ethnic store called Marina Food.  They are at 4148
Monterey Rd, just South of Capitol Xway in San Jose, CA.  408-281-2888.
Thank you to Lia of Low_Carb_SF_Bay_Area, who emailed me with the store
info.

I ate all 7 ounces in one meal.  It looked small compared to the mountains
of pasta I used to eat.  However, it was quite filling.

Shirataki noodles are made from yams, but just because these noodle are made
from yams does not prove that they are legitimate Shirataki.  Given the
Nutrition label, I'm guessing it is the right stuff.