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The app is for adults aged 18 and over. Recipes made with alcohol are for people of legal drinking age where they live (21 in the United States).

If you make something from the app for a child, or for anyone else, that is your decision and your responsibility. Follow every caution, and ask their doctor first.

That is from the Terms of Use. Before the app shows anything, it asks you to tick I am 18 or older, and I agree to the Terms of Use.

If you have a reaction, stop and get help. Stop using it and call your doctor. For trouble breathing, swelling of the face, lips, tongue or throat, or fainting, call 911 or go to the nearest emergency room straight away.

The app cannot help in an emergency. Its Terms of Use say:

Stop using it straight away and call your doctor.

If you have trouble breathing, swelling of the face, lips, tongue or throat, fainting, or any reaction that is severe or getting worse, call 911 (or your local emergency number) or go to the nearest emergency room immediately. Do not wait, and do not look to the app for help in an emergency.

The first line above is in the Take care box on every recipe, at the top of the Safety tab, and in the guide to checking for a reaction.

The recipes are for your own household. The Terms of Use say:

The recipes are for making things for your own household. The app is not a guide to producing food, drinks, cosmetics or cleaning products for sale.

If you sell or give away anything you make, you alone are responsible for following the food, cosmetic, labeling, licensing and other laws that apply. The body and household recipes have not been tested, reviewed or approved by any government agency.

On your iPhone, and nowhere else. The app saves your Pantry (which includes what you tick on the shopping lists), your favorites, and which version of the Terms of Use you agreed to and the day you agreed. It does not send any of it to us or to anyone else, and there is no account. Deleting the app deletes it. Because we never receive it, we cannot restore it for you. The details are in the privacy policy.

Open the Pantry tab and tap the X at the end of the entry. A message appears at the bottom of the screen for a few seconds with an Undo button, in case you tapped by mistake.

Every recipe page has a Take care box. It sits above the ingredients so you read it before you start, and it holds that recipe's cautions, if it has any, and the line about what to do if you have a reaction. The Safety tab has a chart of thirteen herbs and ingredients, each with a caution. If a recipe uses one of them, the app shows that caution in the box automatically. The last row in the box, How to check for a reaction first, opens the app's guide.

The Safety tab starts with a step-by-step guide, "Check for a reaction first". It has one part for something you eat or drink and one for something you put on your skin. Every recipe page links to it from its Take care box: tap How to check for a reaction first.

The guide is not an allergy test, and trying a little first does not rule out a reaction. It is general, and it does not replace your doctor's advice.

The guide to checking for a reaction, the cautions about honey and herb oil, and the fridge and freezer times for soups, broths and cooked leftovers follow six pages from named sources: the American Academy of Dermatology, the U.S. Food and Drug Administration, the U.S. Centers for Disease Control and Prevention, FoodSafety.gov (U.S. government) and the U.S. National Institutes of Health (NCCIH), which has two of the pages. The Safety tab lists each page with a link, and shows the month they were last checked. We read every source again at least once a year. These organisations have not reviewed or endorsed the app.

The herb vinaigrette follows the same rule as herb oil. A few other cooked dishes, and hummus, borrow the cooked-food fridge time to be cautious. The rest of the storage times in the app are general guides to quality, not tested limits.

A best-by date is a general guide to quality, not a guarantee. If something looks, smells or tastes wrong, throw it out.

A "throw away after" date is different. The app uses it for fifteen recipes: the soups and broths, the cooked meals, hummus, the herb vinaigrette and herb oil. Looking and smelling cannot tell you those are still fine. Throw them away once that day has passed, even if they seem fine. On the day itself the Pantry says Last day, and after it Throw it away.

If you freeze a batch, tap I made this and froze it instead of I made this today. A frozen batch gets a best-by date, not a throw-away date, because freezer times are guides to quality.

The app never tells you that something is good or safe to use.

No. Jar & Kettle is a collection of recipes and traditional uses for everyday ingredients. Traditional uses are shared as history, not medical advice. If you are pregnant, nursing, managing a health condition, or taking any medication, ask your doctor or pharmacist before using the herbal recipes.

They are the four shopping lists on the Shop tab, and every recipe belongs to one of them. List 1 is thirteen things to buy and seven recipes to make. Each list after it adds more things and opens up more recipes. A recipe's page shows its list next to its number. On the Recipes tab, choosing Lists 1–2 shows every recipe you can make once you have bought lists 1 and 2.

A book is planned.