Possible Clues:

• Knight knocked back German name, seeking Italian dish
• Creamy Italian dish
• Italian dish cooked in broth
• Trattoria rice dish
• Ristorante dish
• You cook it in stock and soak it finally in port
• Is the knight up to make a meal go to and fro?
• To go up and down for your food following the night up, by the sound of it
• Teacher turned to German chap's food
• Turn to riots to get food