Celeriac is often combined with potato to make a mash. In my opinion, the trouble with that is that it gets a weird texture, and the flavour is not that good as well. I prefer my celeriac raw, or in soup. But then I found an alternative recipe for celeriac mash in the allerhande magazine, with a solution I never thought of for the mash texture: it uses beans. They also add a nice, earthy flavour to the mash and make it more filling.
Using beans instead of potato also makes it possible to stick a blender in it to make a smooth purée (doing that with potato will give you glue). If you like a coarser mash, just use a potato masher instead.
Because it contains both a vegetable and a pulse, it makes a nice 2-in-1 side-dish. It is delicious with all kinds of roast meats, or with a topping of sautéed mushrooms as a vegetarian/vegan alternative (see note for an Italian variation/vegan version of this mash).
Celeriac-bean mash (serves 4)
1 kg celeriac
2 cans of cannellini beans (400 g can, 185 g without the liquid; you can use other white beans)
25 g butter
100 ml milk (more or less)
salt and pepper
20 g flat-leave parsley, chopped
Peel the celeriac, then rinse to make sure that no dirt is left. Cut into chunks, place in a pan with a little water and cook until done (about 15 minutes).
Add the beans and the butter, mash, and add milk until you reached your desired consistency. Season with salt and pepper, and mix through the parsley.
Note: to make this dish vegan, don’t use butter and milk, but use a nice glug of olive oil instead. And use rosemary or sage instead of the parsley to give it an Italian touch, which combines well with the olive oil.