Wash the pork fillets, dab dry and season with salt and pepper. Heat the oil in a large pan and fry the fillets vigorously on all sides. Reduce heat and fry for 15-20 minutes, turning occasionally.
Halve the savoy cabbage, clean and cut into strips. Remove the crusts from the toast and crumble finely. Melt the herb butter in a pan and brown the toast crumbs in it. Peel and halve shallots. Remove the fillets from the pan, wrap them in aluminium foil and let them rest.
Sauté shallots in the frying fat. Deglaze with port wine and stock. Simmer for 5 minutes. Cook pasta in boiling salted water for about 7 minutes. Add the last 4 minutes of savoy cabbage. Drain noodles and savoy cabbage, let drain.
Stir the sauce thickener into the sauce and simmer for 1 minute. Season to taste with salt and pepper. Turn the noodles and savoy cabbage into nests, sprinkle with the crumb mixture. Serve the fillets with the sauce and the noodle nests.