Fresh to Dried Herb Conversion
1 tbsp fresh = 1 tsp dried (1:3 ratio). Add dried herbs earlier in cooking.
Fresh herbs contain about 80% water. Dried herbs are concentrated, so you need less. The standard ratio is 1 tablespoon fresh to 1 teaspoon dried, or 3:1. This works for most leafy herbs like basil, oregano, and thyme.
The ratio varies by herb type and drying method. Delicate herbs like parsley and chives lose more flavor when dried, so you might need a 2:1 ratio instead. Woody herbs like rosemary and sage dry well and can use a 4:1 ratio because their oils concentrate intensely.
Dried herbs need time and moisture to release their flavor. Add them early in cooking, at least 10-15 minutes before serving. Fresh herbs go in at the end, often off the heat, to preserve their bright flavor and color.
How to Convert
Divide the fresh herb amount by 3 to get the dried equivalent. If a recipe calls for 3 tablespoons fresh basil, use 1 tablespoon dried basil. For 2 teaspoons fresh thyme, use 2/3 teaspoon dried.
When substituting dried for fresh, add the herbs during cooking rather than as a garnish. Dried herbs need heat and liquid to bloom. Rub them between your palms before adding to release oils. If the recipe calls for fresh herbs as a garnish, skip the dried version or use a different fresh herb instead.
For herb blends like Italian seasoning or herbes de Provence, use the same amount as you would individual dried herbs. These blends are already concentrated.
Common Mistakes
Using the same amount of dried herbs as fresh. One tablespoon of dried oregano instead of fresh will overpower the entire dish. The concentrated flavor becomes bitter and medicinal.
Adding dried herbs at the end of cooking like you would fresh herbs. They need at least 10 minutes in liquid or fat to hydrate and release flavor. Raw dried herbs taste dusty.
Storing dried herbs too long. After 1 year, they lose most of their potency. Date your jars. If dried herbs don't smell strong when you open the container, they won't add much flavor to food.
Using dried versions of herbs that don't dry well. Dried parsley, chives, and cilantro have almost no flavor compared to fresh. Better to skip them entirely or substitute a different herb that dries well, like oregano or thyme.
Pro Tips
Buy whole dried herbs when possible and crush them yourself. Whole dried bay leaves, rosemary sprigs, and oregano leaves hold flavor longer than pre-ground versions. A mortar and pestle or spice grinder releases oils right before cooking.
Make your own dried herbs when fresh ones are abundant and cheap. Tie bundles with string and hang in a dry spot for 2 weeks. Or use a dehydrator at 95F for 2-4 hours. Home-dried herbs taste fresher than store-bought.
Toast dried herbs in a dry pan for 30 seconds before using. This wakes up dormant oils. Works especially well for oregano, cumin seeds, and coriander.
Keep a 'finishing salt' blend: 1/4 cup kosher salt mixed with 2 tablespoons mixed dried herbs. Use it to season roasted vegetables, grilled meats, or popcorn. The salt helps distribute the herb flavor evenly.
Ingredient-Specific Notes
Basil
3:1 ratio. Dried basil works in cooked sauces and soups but lacks the sweet anise notes of fresh. For pesto or caprese salad, fresh is essential. Thai basil dries better than Italian basil and keeps more flavor.
Oregano
3:1 ratio. One of the best herbs for drying. Mediterranean oregano is more potent dried than fresh. Mexican oregano is a different plant with citrus notes. Both dry well. Add to tomato sauce at the beginning of simmering.
Thyme
3:1 ratio. Dries exceptionally well. Fresh thyme has 0.5mm leaves that are tedious to strip from stems. Dried thyme is already stripped, making it more convenient. Lemon thyme loses its citrus notes when dried.
Rosemary
4:1 ratio because it's so potent dried. Grind dried rosemary in a spice grinder or chop very fine. Whole dried needles are unpleasantly sharp. Fresh rosemary is 2-3mm needles that soften with cooking.
Sage
4:1 ratio. Concentrated camphor flavor when dried. Use sparingly. Dried sage can overwhelm poultry and pork. Fresh sage leaves are velvety and mild, about 2-3cm long. Fry fresh leaves in butter for 30 seconds until crispy.
Parsley
2:1 ratio, but dried parsley has minimal flavor. Use fresh whenever possible. Flat-leaf has more flavor than curly. If you must use dried, add 50% more than the conversion suggests. Better to substitute fresh cilantro or basil.
Dill
3:1 ratio for dill weed (leaves). Dill seed is different, with concentrated flavor like caraway. Use 1/2 teaspoon dill seed to replace 1 tablespoon fresh dill. Dried dill weed loses its bright flavor quickly. Use within 6 months.
Cilantro
Don't bother with dried cilantro leaves. No flavor. Use fresh only. For cooked dishes, substitute ground coriander seed (from the same plant) at 1/4 the amount of fresh cilantro. Adds earthy, lemony notes without the soapy taste some people detect.
Frequently Asked Questions
What's the fresh to dried herb conversion ratio?
The standard ratio is 3:1, meaning 1 tablespoon fresh equals 1 teaspoon dried. This works for most leafy herbs like basil, oregano, and thyme. Potent woody herbs like rosemary use 4:1. Delicate herbs like parsley use 2:1 but lose most flavor when dried. Always start with less dried herb and adjust. You can add more, but you can't remove an overpowering dried herb flavor.
When should I add dried vs fresh herbs?
Add dried herbs early in cooking, at least 10-15 minutes before serving. They need time and liquid to rehydrate. Dried oregano goes into pasta sauce at the start of simmering. Fresh herbs go in at the end or off heat entirely. Fresh basil wilts and turns black with prolonged cooking. Add it to pasta sauce in the last 30 seconds. Some herbs like thyme work well both ways: dried early for background flavor, fresh at the end for brightness.
Which herbs dry well and which don't?
Woody, oil-rich herbs dry best: oregano, thyme, rosemary, sage, marjoram, and bay leaves. These actually concentrate in flavor. Soft, water-heavy herbs dry poorly: parsley, cilantro, chives, basil, and dill. They lose 90% of their flavor. Mint and tarragon fall in between. They're acceptable dried but much better fresh. When a recipe calls for dried parsley, either use fresh or skip it. It adds nothing but green specks.
How long do dried herbs last?
Whole dried herbs last 2-3 years. Ground herbs last 1-2 years. These are maximum times with flavor steadily declining. For best results, replace dried herbs yearly. Write the date on the jar when you open it. Test potency by rubbing a pinch between your fingers. Strong aroma means good flavor. No smell means it's time to replace. Store in airtight containers away from heat and light. The spice rack above the stove is the worst spot.
Can I dry my own fresh herbs?
Yes, and they'll taste better than store-bought. Tie herbs in small bundles and hang upside down in a dry, dark spot for 2 weeks. Or use a dehydrator at 95F for 2-4 hours. Oven drying works at the lowest setting (140-170F) with the door cracked, but watch carefully. Microwave drying (30-second intervals between paper towels) preserves color but not as much flavor. Once brittle, strip leaves from stems and store in airtight jars. Label with herb name and date.