Quick add in Workout Titan Nutrition is the shortcut past searching. It opens on the meal you are adding to and offers two tabs: Suggested and Cookbook.
The Cookbook tab
Your own saved meals, in one list. Nothing is estimated here, and that is the point. These are meals you built and checked yourself, so the numbers are the ones you entered.
The cookbook fills up from the meal card rather than from here. Log a meal properly once, tap the bookmark on the card and name it, and it is in this list from then on. Each saved meal also carries the meal you usually eat it at, and drops into that one by default.
The Suggested tab
Suggestions drawn from your own history rather than from what is popular generally. Nutrition looks at your recent meals and your eating patterns (what you tend to have, at which meal, on which sort of day) and offers a short list.
Anything offered here is marked as suggested by AI, so you always know a suggestion from something you saved yourself. Nothing is logged until you tap it, so a suggestion you ignore has no effect on your day.
Why it is empty at first
A new account has nothing to pattern-match against, so the tab says "Log a few meals and AI will suggest what you often eat". This is not a fault and there is nothing to fix. Log normally for a week and the suggestions arrive on their own.
The Cookbook tab starts empty for the same reason. It holds what you have saved, and a new account has saved nothing yet.
You might add
A separate prompt that looks at the day you have logged so far and points at gaps in it. It is a nudge rather than an instruction, and it does not know anything about you that you have not logged.
Check the serving, as always
A suggestion arrives with a serving already set, usually the one you last used. If today's portion is different, change it before logging. The suggestion is about which food, not how much of it.
What it costs
Adding something from Cookbook or from your recent meals does not spend a food lookup. Neither does fetching a fresh set of suggestions, even though it uses AI. Only two things spend the allowance: searching for a food Nutrition has not resolved for you before, and scanning a photo.
Saving meals to your cookbook covers building that list. Searching for a food and logging it covers the longer route in, for anything neither tab already has.