Kimchi is allowed under cottage food law in a growing number of states — at least 15 as of 2026 — because properly fermented kimchi has a pH well below 4.6, making it a shelf-stable, non-TCS product when processed correctly. However, many states still exclude fermented vegetables from their cottage food allowed product lists, and some require specific training or pH testing. Whether you can sell kimchi from your home kitchen depends entirely on your state's current rules for fermented foods.
The short version: Kimchi is a fermented product with a natural pH between 3.5 and 4.2, which makes it shelf-stable and safe at room temperature when properly fermented. States that include fermented vegetables in their cottage food law — including food freedom states like Wyoming, Utah, Maine, North Dakota, and Arkansas, plus states like Alabama that specifically list fermented and pickled items (see My Custom Bakes' 50-state guide for a full breakdown) — allow you to sell kimchi from your home kitchen. Standard cottage food states that limit products to baked goods and preserves may not. Check your specific state before investing in production. If allowed, kimchi is one of the most profitable fermented products: ingredient costs of $2 to $4 per jar, selling prices of $8 to $14 per jar, and margins of 65 to 80%. Sell through your Homegrown storefront for pre-orders and at farmers markets. For a deeper look, see our guide on selling pierogies from home.
The answer depends on your state. Fermented vegetables are a relatively new addition to cottage food laws, and the regulatory landscape is evolving quickly.
The Alabama Extension pH Pantry Guide explains how pH determines product safety classification — understanding this science helps you make the case to your state regulator if they are unfamiliar with fermented products.
Kimchi safety comes from three factors:
Properly fermented kimchi has a pH between 3.5 and 4.2. The FDA considers any food below pH 4.6 to be "acidified" and inherently resistant to bacterial growth including botulism. The Kitchn's sauerkraut guide explains how salt and natural lactic acid bacteria produce this acidity during fermentation.
Kimchi's salt concentration (typically 2 to 3% of the total weight) inhibits harmful bacteria during the early stages of fermentation while promoting beneficial lactobacillus bacteria that produce lactic acid.
Garlic, ginger, and chili — standard kimchi ingredients — have natural antimicrobial properties that further reduce the risk of harmful bacterial growth.
If your state requires pH verification:
Ingredients:
| Ingredient | Quantity | Cost |
|---|---|---|
| Napa cabbage | 5 lbs | $5-$8 |
| Korean chili flakes (gochugaru) | 1 cup | $3-$5 |
| Fish sauce or soy sauce | 1/4 cup | $1-$2 |
| Garlic | 10-12 cloves | $1 |
| Ginger | 2-inch piece | $0.50 |
| Scallions | 1 bunch | $1 |
| Korean radish (mu) | 1 small | $2 |
| Sugar | 1 tbsp | $0.10 |
| Sea salt | 1/2 cup (for brining) | $0.50 |
| Total for 10-12 jars | $14-$20 | |
| Cost per 16 oz jar | $1.50-$2.00 |
Total production time: 4 to 5 hours of active work spread over 3 to 7 days, yielding 10 to 12 jars. Once you have the rhythm, batches overlap — you start a new batch while the previous one ferments.
Fermentation is not "set it and forget it." Here is what to check each day and what you are looking for:
Day 1: You should see small bubbles forming within 12 to 24 hours. This is CO2 from the lactobacillus bacteria getting to work. If you see no bubbles after 24 hours, your kitchen may be too cold (below 60 degrees F) or your salt ratio was too high. Move the jars to a warmer spot.
Days 2-3: Bubbling increases. The kimchi starts to smell tangy rather than just salty. Press the cabbage below the brine line daily — cabbage that floats above the brine is exposed to air and can develop mold. If brine levels are low, mix 1 teaspoon of salt into 1 cup of water and add enough to cover the vegetables.
Days 3-5: The flavor shifts from salty-raw to sour-funky. This is when you start pH testing if your state requires it. Taste a small piece each day. When it tastes pleasantly sour with a slight fizz on your tongue, it is approaching the target.
Days 5-7: Most batches reach a pH of 3.5 to 4.2 by this point at room temperature (68 to 75 degrees F). Cooler temperatures slow fermentation — a batch at 60 degrees F might need 10 to 14 days. If you are not pH testing, taste is your guide: when the sourness balances the salt and heat, it is ready.
Keep a fermentation log. Record the date you started each batch, the room temperature, daily observations (bubble activity, smell, taste), and the final pH reading. After 5 to 10 batches, you will know exactly how your kitchen environment affects fermentation timing, and your results will become predictable. Kimchi is just one fermented product you can sell — for the full category, see how to sell fermented foods from home.
| Product | Ingredient Cost | Selling Price | Margin |
|---|---|---|---|
| 8 oz jar | $0.75-$1.00 | $6-$8 | 75-87% |
| 16 oz jar | $1.50-$2.00 | $10-$14 | 80-86% |
| 32 oz jar | $3.00-$4.00 | $16-$20 | 75-81% |
The 16 oz jar is the most popular size at farmers markets. The 8 oz jar works as a trial size for first-time buyers or an impulse add-on. The 32 oz jar targets families and repeat customers who go through kimchi quickly.
Price your kimchi 20 to 40% below store-bought artisanal kimchi (which sells for $12 to $18 per 16 oz jar at specialty stores) but above mass-produced options ($5 to $8 at grocery stores). Your positioning is "local, handmade, fresher than store-bought, with ingredients you can read and a person you can meet."
Kimchi sells well at farmers markets because customers can ask about your ingredients, fermentation process, and flavor profile. Offer samples if your health department allows it — kimchi converts skeptics through tasting better than any description.
List your kimchi flavors on your Homegrown storefront for weekly pre-orders. Kimchi customers are some of the most loyal repeat buyers because kimchi is a staple that runs out weekly. Once someone finds a kimchi they love, they reorder consistently.
Kimchi pairs well with other farm stand products — eggs, bread, and fresh vegetables. A jar of kimchi next to your produce display catches the eye of health-conscious customers.
Start with traditional and mild. Add vegan as your third option if demand exists. Seasonal specials come after your core flavors are established.
Using less than 2% salt by weight lets harmful bacteria compete with the lactobacillus. Your kimchi may smell off, develop a slimy texture, or never reach a safe pH. Weigh your salt with a kitchen scale rather than measuring by volume — a tablespoon of fine sea salt weighs almost twice as much as a tablespoon of coarse kosher salt.
Active fermentation produces CO2. A sealed jar builds pressure until the lid pops off or the jar cracks. During the fermentation phase, lids should sit loosely on top or use an airlock. Only seal tightly after fermentation is complete and you are moving the jar to cold storage.
Rushing a batch to market because you are low on inventory is how you end up with a pH above 4.6 and a food safety issue. If a batch is not ready, it is not ready. A $12 jar of kimchi is not worth the risk of making someone sick or losing your cottage food eligibility. Always test pH before labeling a batch for sale.
Customers who loved your kimchi last week expect the same flavor this week. If you eyeball your gochugaru one batch and measure it the next, the heat level changes noticeably. Write your recipe down in exact weights (grams, not cups) and follow it every time. Consistency is what turns a first-time buyer into a weekly regular.
Your kitchen is probably 72 degrees F in summer and 65 degrees F in winter. That 7-degree difference means a summer batch ferments in 3 to 4 days while a winter batch takes 7 to 10 days. If you do not adjust your timeline, you will either sell under-fermented kimchi in winter or over-fermented kimchi in summer.
In a growing number of states, yes. At least 15 states include fermented vegetables in their cottage food allowed product list or use pH testing to qualify products. Food freedom states (Wyoming, Utah, Maine, North Dakota, Arkansas) generally allow kimchi with fewer restrictions. Check your specific state's rules.
Refrigerated kimchi continues to ferment slowly and lasts 3 to 6 months. The flavor becomes more sour over time, which some customers prefer. Room-temperature kimchi (if sealed properly) lasts 1 to 3 months. Always include a "best by" date on your label.
If your state requires pH verification, yes — test every batch. Even if your state does not require it, testing is good practice because fermentation varies with temperature, salt content, and ingredient freshness. A $30 pH meter pays for itself in confidence and food safety.
Shipping kimchi is tricky because it continues to ferment, producing CO2 that can burst sealed containers. If you ship, use containers with a one-way valve or "burping lid" and ship with cold packs. Most cottage food vendors stick to local pickup and farmers market sales because shipping adds $10 to $15 in costs and logistics.
If too sour: fermentation went too long or the temperature was too warm. Next batch, ferment for fewer days or at a cooler temperature. If not sour enough: fermentation was too short or too cold. Give it another day at room temperature. pH testing removes the guesswork — below 4.2 is ready.
Use glass mason jars (wide-mouth recommended for easy packing). Plastic absorbs odors and stains. Do not use metal lids that contact the kimchi — the acid corrodes metal. Two-piece mason jar lids with a separate ring work well, or use plastic lids designed for mason jars.
This is the number one piece of feedback you will get. The solution is offering two heat levels from the start: a traditional version and a mild version with half the gochugaru. Label them clearly ("Original Heat" and "Mild") and let customers choose. Do not try to find one heat level that pleases everyone — it does not exist. Some vendors also keep a small jar of extra gochugaru at their booth so customers can see what gives it the heat. It is a conversation starter that builds trust.
You can make kimchi year-round. Napa cabbage is available in most grocery stores and Asian markets in every season, though prices dip in fall and winter when it is in peak season ($0.79 to $1.29 per pound vs. $1.50 to $2.00 in summer). The bigger seasonal factor is temperature — your fermentation will be faster in summer and slower in winter. Some vendors make larger batches in fall when cabbage is cheapest and let them cold-ferment slowly over weeks for a deeper, more complex flavor.
