Celeriac looks unappealing. It’s knobbly and covered in earth. However, it produces a nutty, aromatic flavour. Cut it into wedges and remove the outer layer. Slice the celeriac and potatoes too.
Cook the sliced celeriac and potatoes.
Beat together some eggs with seasoning and perhaps a dash of chilli flakes. In the large frying pan fry the chopped onions. Add the egg mixture followed by the cooked vegetables. When it’s set and cooked, the tortilla makes a simple different dish.