For the filling, remove the skin from the chorizo and dice the sausage. Peel 2 onions and dice finely. Coarsely chop 2 tablespoons of almonds. Heat a pot without fat. Fry the chorizo for about 3 minutes.
Add onions and steam for 8-10 minutes. After about 3 minutes add chopped almonds. Add vinegar and simmer for 1-2 minutes. Season to taste with a little salt and pepper. Wash parsley, shake dry, remove leaves and chop finely.
Approx. 1⁄3 Mix the parsley with the chorizo mix.
Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Wash meat, pat dry and lay flat on the work surface. Spread the filling over the meat, roll up the meat and tie up with kitchen string.
Rub all around with salt and pepper. Heat 1 tablespoon of oil in a frying pan. Brown the rolled roast thoroughly all around. Then roast in a hot oven for about 1 1⁄2 for 2 hours.
For the couscous, roast coriander seeds and peppercorns in a pan without fat for 1-2 minutes. Remove and crush finely in a mortar. Peel and finely dice the remaining onion and garlic. Peel, wash and thinly slice the carrots.
Coarsely chop the dates and 4 tablespoons of almonds.
Heat 1 tablespoon of oil in a saucepan. Fry the onion and garlic for about 3 minutes. Fry carrots, dates, almonds, bay leaf, ground spice powder and 1⁄2 tsp. paprika briefly until fragrant. Deglaze with orange juice, bring to the boil and simmer for 10-12 minutes at low heat.
Season to taste with salt and pepper.
Boil 150 ml water with 1⁄4 TL salt in a pot. Stir in the couscous, remove from the heat and let it swell in a closed pot for about 5 minutes. Loosen up with a fork. Mix the couscous and the rest of the parsley loosely with the carrot vegetables.
Remove the roast and cut it open. Dissolve the gravy with a little hot water and stir into the couscous. Serve everything.