There are two kinds of herbs and most people use them interchangeably, which causes consistent disappointment. Soft herbs and hard herbs behave completely differently in heat, and understanding that distinction changes a great deal about how you cook.
Hard herbs — rosemary, thyme, bay, sage, oregano — have woody stems and leaves with a low moisture content. They can go into a dish at the beginning and survive extended cooking without losing their character. Rosemary on a leg of lamb from the start of the roast is the correct use. Thyme in a braise for three hours is exactly right. Added raw at the end of cooking, however, hard herbs are sharp and medicinal in a way that doesn’t work.
Soft herbs — flat-leaf parsley, mint, coriander, dill, tarragon, basil, chives — work in the opposite way. Their flavour is volatile and escapes quickly in heat. Added at the beginning of a long cook, they vanish entirely and contribute nothing. Added in the final two minutes, or more often after the heat has been turned off entirely, they transform a dish. Stirred through at the last moment. Scattered over at the table. This is when they work.
The finishing herb
This is the concept that most home cooking misses. The finishing herb isn’t a garnish — it’s a structural component. A bowl of white beans and cavolo nero is nourishing and warming. The same bowl with a handful of flat-leaf parsley torn over at the end is also alive. The parsley is doing something specific: it adds brightness, a grassy top note that the cooked dish doesn’t have on its own, and a contrast in colour that makes everything look as good as it tastes.
Mint with roasted lamb. Dill with salmon. Coriander over a dhal. Tarragon through a cream sauce for chicken. These aren’t arbitrary pairings — they’ve developed because the herb’s specific flavour addresses something the main ingredient needs.
The rule is simple: soft herbs at the end, hard herbs at the beginning. Apply it consistently and the quality of your cooking will improve noticeably without any other change.
Amount
The other consistent mistake is quantity. Most recipes call for “a small handful” or “a few sprigs” because recipe writers are worried about overwhelming people. In practice, soft herbs are best used generously — what tastes like too many in the bowl before mixing is usually exactly right once everything is combined.
A tabbouleh made with more herb than grain — which is how it should be — teaches you something about proportion. The herbs aren’t supporting players. They’re the point.
Storing them properly
A bunch of flat-leaf parsley, bought on a Monday and left unwrapped in the salad drawer, will be yellow and slimy by Wednesday. The same bunch, trimmed at the stems and kept in a glass of water in the fridge loosely covered with a bag, lasts through the week.
Basil is an exception: it hates cold and goes black in the fridge. Keep it on the worktop in a glass of water at room temperature, away from direct sunlight.
Hard herbs — rosemary, thyme, bay — last considerably longer and are more tolerant. A sprig of thyme left in the fridge keeps its character for two weeks. The bay tree growing on a windowsill is genuinely the most useful kitchen investment for a pound or two.
On waste
Soft herbs are sold in bunches designed for catering, not home cooking. The solution isn’t to buy less — it’s to use more, and to use the whole bunch over the course of a few days rather than the few sprigs most recipes require.
A surplus of parsley becomes gremolata, stirred through at the last minute with garlic and lemon zest over braised meats. Surplus mint becomes a quick sauce with yoghurt and garlic. Surplus coriander becomes a fresh chutney with lime juice and a little green chilli. None of these takes more than five minutes and each of them is worth doing.
The herbs are the part of a dish that signals care. They’re almost always worth the extra attention.