Roast Pork Roll Filled with Herbs

Rinse herbs, shake dry and chop finely. Rinse roast, pat dry and roll apart. Brush olive oil over roast pork, sprinkle herbs and mustard seeds over olive oil and season with salt and pepper. Roll up pork roast. Secure with toothpicks or tie up with kitchen string and season again with salt and pepper. Heat oil in a roasting pan and brown roast pork on all sides, then add a little water and simmer for 45-60 minutes in a preheated oven. During cooking time, turn roast pork 2-3 times and possibly pour some water over roast if needed. Place finished roast on a serving dish. Deglaze the roasting pan with some boiling water, pour in a pot, bring to a boil and let liquids reduce somewhat over medium heat. Season with salt and pepper and stir in the cold butter. To serve, cut roast into slices and serve with rich sauce.