Not true. I'm pretty sure Bacon & Eggs and Monster Lasagna have the same priority, unless that's been changed since I last played. If you put two monster meat in, you're rolling a 50/50 for Bacon & Eggs or Lasagna, which isn't worth it to save a morsel imo.
The cooling and heating mechanics are _there_ I guess, IME they're not very useful (except maybe in Summer if you end up being unprepared) much like the sanity foods, which tend to be more effort than they're worth unless you have loads of their components already.