Wash the turkey breast, dab dry and tie into shape with kitchen string. Season all around with salt and pepper. Add bay leaf and rosemary to the yarn. Place on a baking tray and cook in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 1 3/4 hours.
Mix mustard and honey. After 1 hour coat the roast with it. Dissolve 1 teaspoon of salt in 200 ml hot water. After another 15 minutes, sprinkle the roast with the salt and cook until done. In the meantime, peel the pineapple for the chutney and remove the stalk.
Cut the fruit flesh into small cubes. Peel and chop the onions. Wash the chilli, carve lengthwise, remove seeds and chop. Mix prepared ingredients, mustard seeds, vinegar, brown sugar and 100 ml water in a pot and simmer for about 20 minutes.
Garnish roast and chutney with fresh herbs.