My grandmother kept a small notebook by the kitchen window. Not recipes — just lists of things she refused to waste. Herbs were near the top.
Whenever a bunch of flat-leaf parsley started to droop, or a clutch of thyme had two days left in it, she'd pull the butter from the fridge and spend ten minutes at the table. By the time the tea was brewed, she had a neat log of compound butter cooling in the refrigerator. A week later it was in the freezer. A month later it was melting over roast chicken as if it had always belonged there.
What you need
- 250 g (2 sticks) unsalted butter, at room temperature
- A large handful of soft herbs — parsley, chives, tarragon, or dill work well
- ½ teaspoon fine salt (more if your herbs are bold)
- Optional: a small pinch of lemon zest, garlic, or dried chilli flakes
Hard herbs — rosemary, thyme, sage — are welcome in smaller amounts. They're more intense, so add no more than 1 tablespoon of picked leaves per 250 g butter, and taste before you commit to more.
How to make it
Chop the herbs finely. A sharp knife matters here — a blunt, mashing chop bruises the leaves and makes the butter taste grey. If you're using a mix of scraps from the week, taste as you combine; parsley and chives are easy friends, tarragon and dill less obviously so.
Beat the soft butter in a bowl until smooth, then fold in the herbs and salt. Taste and adjust.
Tip the mixture onto a sheet of cling film. Shape it into a rough log, then roll the film tightly around it and twist the ends closed. Aim for about 4 cm in diameter — that's a nice single-slice size. Refrigerate for at least an hour before slicing, or move it straight to the freezer.
How to use it
Slice a round straight from frozen — it doesn't need to thaw — and lay it over:
- A steak or piece of grilled fish while it rests
- New potatoes, roasted carrots, or steamed green beans
- A bowl of white beans with a heel of crusty bread
- Corn on the cob
- A plain omelette that needs one last thing
The butter keeps in the fridge for 1 week and in the freezer for 2 months. Write the date on the log with a marker. You will forget when you made it, and you will thank yourself in February when you pull it out for a pan sauce.
On proportions
There is no wrong ratio here. A loose handful of parsley to 250 g butter is forgiving and hard to ruin. Too many hard herbs and it veers medicinal; too few herbs and it is just slightly green butter. Both are still perfectly edible.
My grandmother never measured. After thirty years of watching her, I've started writing it down.
