Seal the fillets all over in hot oil. Place the pan in a hot oven (220° C) and cook for about 5-6 minutes. Remove and allow to rest.
Place some of the Green Fennel sauce in a pool in the centre of each plate. Place 3 quenelles of Fennel Puree around the centre. Place a mound of the Fennel & Apple salad in the centre of the plate. Slice the pork and place around the salad. Stand an apple crisp upright in each quenelle. Spoon the Mustard Seed Vinaigrette around.
Toss all the ingredients together in a medium sized bowl.
Sweat the onions in the butter. Add the apple and fennel. Continue to sauté for about 5 minutes until the fennel starts to soften. Add about 2 cups of water and simmer for 20 to 25 minutes until the fennel is very soft.
Drain off the liquid and reserve. Puree the fennel & apple in a blender until smooth or pass through a food mill.
For the Fennel Puree – Use about ¾ of the fennel and apple mixture. If desired add a splash of Pernod to liven up the flavours.For the Green Fennel Sauce – use the remaining ¼ of puree, which has been allowed to cool, and blend in the fennel fronds and enough reserved liquid to make a sauce.
Whisk all the ingredients together.
Lay the apple slices on a non-stick baking sheet. Place in a 100° C oven for about an hour, or until lightly golden and crisp. Once cooled, store in an airtight container.