It has no cosponsors and hasn’t been presented to a committee yet. It’s like calling a bowl of flour, water, and yeast a “new bread”

It's like calling "a bill recently introduced by Assembly Member Bauer-Kahan" ... "California's new bill". It's not California's anything, and won't be unless/until it becomes part of California's legal code.

Bill is to law as dough is to bread.

Wouldn't the process of following the due process before it can be voted upon essentially the same of combining ingredients to make dough?

I don't know but a loaf of bread is a completed product and a bill certainly isn't. Beyond that the analogy probably isn't very helpful.

Obviously, it's not "California's" anything, and won't be until/unless it becomes part of California's legal code.