Slice the pork fillet on the diagonal to 1cm/½in thick slices.
Dredge the pork in the seasoned flour and shake off any excess.
Place the egg into a bowl and whisk in the milk.
Dip the floured pork into the egg and then into the crushed crouton crumbs.
Heat a frying pan until hot and add the butter and oil. Once the butter is foaming, add the coated pork and fry on each side for 2-3 minutes, or until golden-brown all over and completely cooked through.
For the salad, place the fennel, green beans, asparagus tips and celery in a bowl and mix together.
Whisk the olive oil, lemon juice and parmesan together in a separate bowl, then season with freshly ground black pepper. Pour over the salad, add the parsley and toss to combine.
To serve, the pork escalopes onto a plate with a spoonful of salad alongside. Place the baby beetroot around the edges of the dish.