Peel the garlic cloves and quarter them lengthwise. Wash the herbs. Pluck rosemary needles. Wash the meat and pat dry. Make small incisions all around and put the garlic quarters in. Rub the roast with salt and pepper. Press the herbs firmly onto it
Place the roast on the grill above the fat pan. Roast in the preheated oven (electric cooker: 175 °C / convection oven: 150 °C / gas: level 2) for approx. 2 1/4 hours. Deglaze gradually with 3/8 l orange juice. Wash the garlic bulb, cut in half and roast for the last 1/2 hour
Mix orange marmalade, 4 tablespoons orange juice, mustard and sugar. Spread the glaze over the roast 5 minutes before the end of the frying time
Dissolve the meat with 1/8 l water, bring to the boil and reduce to a slightly thick consistency. Season to taste with Tabasco and liqueur. Cut the roast open and garnish with fresh herbs and orange wedges. The extra sauce is enough