Recipe Lab
Build a recipe, change one thing, and keep what works. Scale it to the batch you need or the ingredients you have, cook it step by step with timers, score every experiment, and see exactly what changed between versions. Everything stays in this browser.
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How Recipe Lab works
Enter a recipe the way you weigh and measure it. Change the batch with the scale slider, or let it work the multiplier out for you: tell it how many you want to make, or how much of one ingredient you have, and every other amount follows. Nothing you enter is changed by scaling; it is a view of the same recipe at another size.
When you are about to change the formula, press New version. The recipe as it stands is frozen, and the Versions tab shows exactly what changed between any two: which ingredients went up or down and by how much, which were added and which removed. After each batch, log an experiment: what you changed, four scores out of five, and what to try next. Each experiment keeps the formula it was made with.
Weights, volumes and counts are kept apart
Grams and ounces convert into each other, and so do millilitres, teaspoons and cups (US measures). But a cup of flour is never turned into grams, and an egg is never given a weight, because those depend on the ingredient and on how you fill the cup. That is why totals are shown separately for weighed, measured and counted ingredients, and why baker's percentages only include what you weighed.
Nutrition from your own labels
Open Product & nutrition under any ingredient and enter the values from its label, per the amount the label states. Recipe Lab multiplies each by how much you used. A blank is treated as unknown, never as zero, and every total says how many of your ingredients it covers. It does not model cooking losses or what is left in the pan.
Common questions
Where are my recipes stored?
In this browser, on this device, on app.toolsfully.com, where no advertising or analytics scripts run. Nothing is uploaded. Clearing your browser data removes them, so use Back up everything now and then.
Can I move my recipes to another device?
Yes. Back up everything to a file, then restore that file on the other device. Restoring adds copies beside what is already there; it never overwrites a recipe.
Can I put a recipe into Notion or Apple Notes?
Export it as Markdown for Notion (Settings → Import → Text & Markdown), or as plain text for Apple Notes (File → Import to Notes on a Mac). Exports can include every earlier version and your experiment log.
What are baker's percentages?
Each ingredient written as a percentage of the flour by weight, so flour is always 100%. They make it easy to compare doughs and to change the size of a recipe in your head. Turn them on in the Ingredients card and choose which ingredient is the base.