The first one is more ambiguous. Is it fruit cake and bread of some type, or is it fruit cake and fruit bread [the ampersand generally being a joiner]?

If you do the searches, you will see they are all somewhat similar, with the second two being obviously more related. [collinstreet.com is going to wonder about the strange impressions data in their Adwords campaign...]

An ampersand and the word "and" are mostly the same in Google & there are some who feel that a special character in a title can attract more attention & so is a good thing.

There is nothing wrong with using commas in title tags.

The issue is, will these titles look appealing to searchers when they see them on the results page.

If yes, they are good titles. If no, they need fixing.

(Here is a previous thread that touches on this.)

Title is not a meta tag, as for the rest, order does not matter, they have to be somewhere in the head section. The id attribute can be used on any element in HTML5 and moving it to the end will make no difference. However in general it is best to keep a standard, consistent style. Why stir things up unnecessarily?

Yes, I agree with those responses. The other thing to consider is that H1 tags should be specifically descriptive of the page that they are on. If you have the same H1 on every page (company name) you are not giving search engines any extra clues to what the page is about. (Also H2 and below can be useful in structuring your page, but are not big ranking signals.)

If you are adding value to the category pages and making them useful places for the user to land and not just a list of links, then by all means, you should keep them indexed. And yes, in this case you still need for each page to have a canonical URL, so you will have to pick which category a recipe best fits in. (You can still have the link on two category pages, one of them just needs to be the canonical.)

Look at the source code of your page and search for "a href="--that will show you your links.

Yes, you will have to wait a bit to see if that changes anything. But in the meantime, take a look at the source code of one of the pages that is reporting a zero bounce rate and see if the Analytics code is on the page twice. (Here is an article on bounce rates that has additional information, if that is not the answer.)