Celeriac and Parsley Soup

• 1 tbsp olive oil
• 2 large onions, chopped
• 1 medium-large celeriac (cele

Heat the oil in a large heavy saucepan over a low heat, add the onion, cover and gently fry for about 5 minutes, until beginning to soften.

Meanwhile, prepare the celeriac (celery root): use a sharp knife to remove the outer skin, cutting it off fairly thickly, then cut the celeriac into chunky pieces about the size of small new potatoes.

Stir the celeriac chunks into the pan, a