What Prepare is
Prepare is a kitchen view. You open a saved recipe, say how many servings you're making tonight, and it shows you the ingredient amounts for that batch so you can cook straight from the screen without doing the arithmetic yourself.
It is a checklist, not a logging step. Nothing you do in Prepare is saved, and nothing is added to your journal.
Using it
Open the recipe and choose Prepare.
- Set Prepare for — how many servings you want to make. Whole servings, from 1 to 100.
- Every ingredient amount rescales to that batch. A recipe written for 4 servings, prepared for 6, shows one and a half times of everything.
- Tap ingredients to tick them off as they go in the bowl. It is scratch state to keep your place while cooking, not something the app remembers.
- If the recipe has preparation steps, they appear underneath, one per line, in order.
That is the whole feature. There is no save button and no "log this" button, because Prepare does not change anything: your saved recipe is untouched, and your day is untouched.
Logging what you cooked
Log the recipe the way you always do, from search or from your recipe book, and pick how many servings you ate. Preparing for six and eating one is one serving in your journal — the Prepare screen and the logging step are independent.
When the batch came out different
This is the part people expect Prepare to handle, and it doesn't. If what came out of the pot doesn't match the recipe, there are two tools, and which one you want depends on what changed.
The dish reduced, absorbed, or otherwise weighs something different than usual. Edit the recipe and set Total weight, whose hint says exactly what to do: weigh the dish after cooking. Until you type a number there, the field quietly follows the sum of your raw ingredients — which is always a bit heavy, because a simmering sauce loses water. Put the real cooked weight in and a serving stops being an abstract "one serving" and becomes a specific number of grams of the finished dish. That is what makes portioning by weight honest.
One ingredient changed this time. Explode the entry after logging it. That turns the meal back into its individual ingredients in your journal, where you can adjust or swap the one that was different and leave the rest alone.
You made a bigger or smaller batch than the recipe describes. Nothing to fix. Servings are servings; log the number you ate.