Knockout Knobbles: Putting Celeriac to Work in a Vegan Winter Kitchen
Let’s be honest: celeriac has a face only a veg box could love. It arrives looking like a muddy brain that has been in a fight with a potato peeler, all knobbly bits and hairy roots, and it rarely gets the Instagram treatment. But give it half an hour in a hot oven and a bit of salt, and this quiet oddball turns into one of the most useful things in a vegan winter kitchen. It is not a parsnip. It is not a turnip. It is celery’s weird, wonderful cousin, and it deserves better than the back of the fridge.
A fair hearing for the ugly root
Celeriac has a lot going for it. It brings a savoury, celery-ish flavour that works with mustard, garlic, thyme, lemon and anything vaguely creamy. It roasts beautifully, mashes like a dream and can be eaten raw when you want crunch rather than comfort. It also happens to be in season in the UK over the colder months, which is exactly when we need roots that can carry a meal without turning everything into another tray of orange.
The trick is not to treat celeriac like a fragile restaurant ingredient. It is a workhorse. Buy it, peel it, chop it, cook it. The only real enemies are water, heat and time: too much boiling makes it soggy, too little seasoning makes it dull, and leaving it uncovered in the fridge turns it into a sad, spongy brick.
Choosing one that is worth the peeling
A good celeriac feels heavier than it looks. Pick it up. If it feels light and hollow, put it back. Look for a firm, pale root with tight skin and no soft patches. Small roots are easier to peel and less woody in the middle; big ones are brilliant for roasting but need a bit more trimming. Avoid any with damp patches or a sour smell, and don’t worry too much about the dirt. It is a root. It has been living in the ground.
Once you get it home, cut off the leafy top and the rooty tail if they are still attached. Keep it whole in the fridge, loosely wrapped in a cloth or a paper bag, and it will happily sit for a week or two. If you have already peeled and chopped it, drop the pieces into water with a squeeze of lemon. Celeriac browns quickly once exposed to air, and while that does not affect the taste, a grey pile of root does not look especially appetising.
The foolproof roast
This is the method that converts sceptics. Heat the oven to 200°C fan. Peel the celeriac properly, taking off the knobbly outside and any woody bits, then cut it into rough 3cm chunks. Toss them in a bowl with olive oil, a good pinch of flaky salt, black pepper and a few sprigs of thyme. Spread them out on a baking tray with plenty of space. Crowding the tray is what makes roast veg go pale and limp, so use two trays if you need to.
Roast for 25 to 30 minutes, turning once halfway through. You want the edges dark gold and the middle tender but not collapsing. If you are roasting it alongside a Sunday nut roast or a tray of vegan sausages, give it a head start and then add the rest later. A final squeeze of lemon and a scatter of chopped parsley wakes the whole thing up.
If you want a softer, more melting result, parboil the chunks for five minutes first, drain them well and let them steam dry before roasting. That gives you a fluffier edge and a creamier centre. Both ways work. The dry-roast method is faster; the parboiled one is a bit more Sunday-lunch.
Three very British ways to serve it
1. Celeriac mash with mustard and nutmeg
Boil peeled celeriac chunks in salted water for 15 to 20 minutes, until a knife slides in easily. Drain well and let it steam for a minute. Mash with vegan butter, a teaspoon of Dijon mustard, a grate of nutmeg and plenty of black pepper. Do not add lots of liquid at once; celeriac holds water, and you want mash, not soup. This is excellent under a mushroom pie, beside a nut roast or with a generous spoonful of onion gravy.
2. Mustardy celeriac remoulade
For days when you want crunch, grate raw peeled celeriac coarsely and toss it straight away with lemon juice. Stir through vegan mayonnaise, a little Dijon mustard, capers, chopped parsley and a pinch of salt. Let it sit for 20 minutes so the celeriac softens slightly. Pile it into a sandwich with rocket, or serve it alongside a baked potato. It is a proper pub-lunch kind of salad, sharp and creamy and much more interesting than coleslaw.
3. Roast celeriac with a maple-mustard glaze
Take your roasted celeriac chunks and brush them with a mix of maple syrup, wholegrain mustard and a splash of cider vinegar in the last five minutes of cooking. Return to the oven until sticky at the edges. Scatter with toasted hazelnuts and serve with butter beans, greens and a thick gravy. It is the sort of thing that makes a January tea feel like a proper dinner rather than a fridge raid.
The quiet winter all-rounder
Celeriac will never be the pretty one. It will never be the vegetable that sells a cookbook on the cover. But in a vegan winter kitchen, it does the job again and again: it adds depth to soups, body to mash, crunch to salads and substance to a roast tray. Next time a knobbly root turns up in your veg box, don’t leave it in the dark. Peel it, roast it and give it a fair go. It might just become the quiet hero of your 2026 winter cooking.
