How to Package Sourdough Starter to Sell: Jar Cost and Label

On this page

1. What does a starter buyer actually need
2. How do you jar and label it, step by step
3. Glass jar or dried starter: which one do you sell
4. What has to be on the label before your first sale
5. What is the cost per jar, and what margin is left
6. Which packaging mistakes cost you money

Once you know how to package sourdough starter to sell, the job stops being about baking and starts being about trust. A buyer cannot see through the lid to check your work, so the outside of the jar has to tell her everything. Get the jar and the label right and you can sell the same starter every week without answering the same questions.

What does a starter buyer actually need

She cannot see inside the jar, so the outside has to do the talking. Your buyer has three questions: is this alive, is it safe, and who do I ask when it goes wrong. Every choice about the jar, the lid, and the label should answer one of them.

A clear glass jar answers the first question before she opens it. She can see the bubbles and the rise. A smeared or cloudy jar answers it the wrong way, no matter how good the starter is inside.

The card inside the box does more than the jar does. A short note that says when to feed it, what flour to use, and what to do if it smells sharp turns a one time sale into a repeat customer. Keep the note to four lines so she actually reads it.

How do you jar and label it, step by step

Work in one sitting and do the same five things in the same order every time. The order matters more than the speed, because a skipped step is a jar you have to remake.

1. 1

   Pick a jar that survives the trip

   Use a straight sided glass jar with a screw band. Fill one with water, shake it, and turn it upside down over the sink to prove the seal before you commit to a whole case.

2. 2

   Fill to the shoulder, not the rim

   Leave an inch of headroom so the starter has room to move. Wipe the rim with a clean cloth so the lid seats flat and nothing dries on the threads.

3. 3

   Label the side and the lid

   Put your name, the feed date, and your phone or email on the side. Add a small sticker on the lid, so the jar is still yours if the side label comes off in a cooler.

4. 4

   Stand the jars up in a box

   Use a divider or a rolled towel between jars and keep them upright. A jar that lies down leaks into the lid and arrives looking like a mistake.

5. 5

   Hand it over cool and say the feed date out loud

   Keep jars out of a hot car. Say the feed date when you hand it over, and put the same words on the card in the box.

Glass jar or dried starter: which one do you sell

A live jar is the version buyers understand, and it is the one that needs a cooler and a fast handoff. A dried starter travels flat, keeps far longer, and asks the buyer to wake it up herself. Both sell. They just sell to different people.

If you want to offer dried starter, how to dehydrate sourdough starter to sell covers the steps and the cost. Do not run both formats in your first month. Pick one, get the packing right, then add the second.

Price the whole package, not just the jar. A jar alone is one number, but the lid, the label, the box, and the tape are four more. Add them before you compare two suppliers, or the cheaper jar will not turn out cheaper.

What has to be on the label before your first sale

Print nothing until you have read your own state cottage food rules. They decide what a label has to say, and no template can do that part for you. How to legally sell sourdough walks through the permits and the label basics in plain words.

Then add what your buyer needs on top of what your state asks for. Put the feed date, the flour you feed with, and a phone number or email that reaches a person. If she is buying for a household with a wheat allergy, the flour line is the first thing she reads.

Print labels in sheets at home and keep a pen by the box. The state required lines can be preprinted, and the feed date goes on by hand. That way a change in your state rules does not waste a whole box of stickers.

What is the cost per jar, and what margin is left

Selling starter is a packaging business with a little flour in it. The jar, lid, label, and box decide whether the month pays. Write each cost down once, divide by the number of jars in the case, and use that number every time.

For example, say you sell 24 jars in a month at $12 each, which is $288 in sales. Ingredients run about $0.45 a jar. The jar, lid, and label come to about $1.55. Ten minutes of your time at $18 an hour is $3.00, and Brevl at $20 a month spread over 24 jars is about $0.83.

Add those four lines and each jar costs $5.83, which leaves $6.17 of margin and $148.08 for the month. Brevl takes 0% of your sales, so the $20 is the whole cost of selling through your own shop. Swap the example numbers for your own before you set a price, and use how much to sell a sourdough starter for for the pricing side.

Leave your own time out and the same month looks like $220.08 of profit instead of $148.08. That gap is the one that makes a price feel fine all month and then leave nothing at the end.

Do this once a quarter, not once a year. Jar prices and flour prices both move, and a cost sheet from last winter will price you into a loss. Fifteen minutes with a receipt pile is enough.

Which packaging mistakes cost you money

The packaging mistakes that cost money are boring ones. They are the jar bought the week it is needed, the label with no date, and the box with no padding. None of them feel like much on their own. Together they are the difference between a month that pays and a month that does not.

Keep a sample jar from every batch and write the date on it. When a buyer messages you about a jar that did not rise, you can check the sample instead of guessing. That one habit saves more arguments than any apology.

Common questions

What kind of jar should I use for sourdough starter?

A straight sided glass jar with a screw band. It seals hard, it stacks in a box, and your buyer can see the starter through the glass. Check the seal with water before you fill a whole case. Skip any jar with a chip at the rim.

Do I have to sell live starter or can I dry it?

You can sell either, and the choice changes your packing. Live starter needs a jar, a cooler, and a fast handoff. Dried starter travels flat in an envelope and keeps far longer. Pick one for your first month, then add the other once packing is routine.

How do I work out the cost of one jar?

Add the starter ingredients, the jar, the lid, the label, and the box. Add your time at an hourly rate you would pay someone else. Add your monthly costs divided by the jars you sell. The total is your cost per jar, and your price has to clear it.

Should the price be on the label?

Yes, put it on the jar or the box lid. It ends the price conversation at the handoff and it gives you a written record of what sold and for how much. Your end of day count then takes minutes instead of a spreadsheet rebuild.

Can I sell starter before I check my state rules?

Read your own state cottage food rules before your first sale. They decide what your label has to say, and a template you find online cannot tell you which rules apply to you. Get the label right before you print a sheet.

General information, not legal or tax advice. Check your own state cottage food rules before you sell.