Preserving Fresh Herbs for Winter
To keep summer herbs through the cold months, choose between drying, freezing in oil, or salt-packing based on the leaf texture. Delicate, soft herbs like basil and parsley belong in the freezer, while woody stems like rosemary and thyme are best air-dried.
Know your leaf type
Woody herbs hold their structure when moisture is removed, but tender leaves will turn to dark mush if dried slowly. Match your method to the herb’s anatomy.
- parchment paper
- ice cube trays
- twine
- glass jars with airtight lids
- baking sheet
What goes in.
- as neededfresh thyme, rosemary, or oregano
- as neededfresh basil, parsley, or cilantro
- 1/2 cupextra virgin olive oil
- to tastecoarse sea salt
Avoid the rot
If you see any condensation inside your storage jars or bags, the herbs were not fully dry. Moisture is the enemy that leads to mold rather than preservation.
The method.
Air-drying woody herbs
Gather stems of rosemary, thyme, or oregano into small bundles. Tie the base with twine and hang them upside down in a cool, dark place with good air circulation. They are ready when the leaves crumble easily between your fingers, usually after 7 to 10 days.
Freezing tender herbs
Strip basil or parsley leaves from the stems and chop them coarsely. Fill the compartments of an ice cube tray halfway with herbs, then top with olive oil. Once frozen solid, transfer the cubes to a freezer-safe bag.
Salt-packing
Place a thin layer of coarse sea salt at the bottom of a small jar. Add a layer of herb leaves, then another layer of salt. Repeat until full, finishing with a thick layer of salt. Keep in the refrigerator to use in sauces.
Other turns to take.
Compound Butter
Mix finely chopped fresh herbs into softened salted butter, roll into a log with parchment paper, and freeze. Slice off coins as needed for searing steaks or finishing roasted vegetables.
When it doesn't go to plan.
Always harvest herbs in the morning after the dew has evaporated but before the heat of the day draws out their essential oils.
Do not wash herbs unless they are visibly gritty; water on the leaves increases the risk of mold during the drying process.
Label your containers with the date, as dried herbs lose their potency after about six months.
The ones that keep coming up.
Can I dry herbs in the oven?
It is possible, but risky. If the oven is too hot, you will cook the herbs rather than dry them, losing the volatile oils that provide flavor. Air drying remains the most reliable method.
Why did my basil turn black in the freezer?
Basil is highly sensitive to cold and oxidation. Freezing it in oil protects the leaves from direct contact with the air, which is the primary cause of discoloration.
How real cooks make it.
No one’s shared their version yet. Be the first to put your kitchen on the map.
Cook this your way?
Share your version — your steps, your story. We’ll feature it right here.
Add your recipe