Some questions: juice, cauliflower, shortening

[Guest guest]

Hi everyone. First off, thanks SO much to all of you for your

questions AND answers. I'm learning a great deal and feel better

knowing I'm not going at this alone!

A few questions:

JUICE. Can someone explain to me in more detail why apple juice is

not legal but cider is? What is the difference, exactly? How about

the Tader Joe's organic, unfiltered apple juice? And are ALL grape

juices -white included - allowed? I guess I'm confused about the

idea that there can be contamination with food that is purchased.

Why, for example, is Welch's acceptible and Trader Joe's isn't?

PINEAPPLE. Is the canned pineapple from TJ's allowed? It contains

only pineapple and pineapple juice (doesn't say anything about being

it's own)

Cauliflower. One of the recipes from peacnbread.com calls for

cauliflower juice. What is this, exactly?

What is Spectrum shortening?

Thanks!

Corey