To cook sous vide, you will need a sous vide machine or immersion circulator, a vacuum sealer or resealable bags, and a pot or container. First, season your food and place it in a vacuum-sealed bag or resealable bag. Then, use the vacuum sealer to remove the air from the bag and seal it, or use the water displacement method to remove the air from the resealable bag. Next, attach the sous vide machine to the pot or container and set the temperature and cooking time according to your recipe. Once the water reaches the desired temperature, place the sealed bag in the water and cook the food for the specified time. Finally, remove the bag from the water, open it, and finish the food by searing, grilling, or broiling it for a crispy exterior. **

Steaks are pre-cooked with sous vide by vacuum-sealing the steak in a bag with seasonings and then cooking it in a water bath at a precise temperature for an extended period of time. This ensures that the steak is cooked evenly and to the desired level of doneness. Once the steak is cooked sous vide, it is then quickly seared on a hot grill or pan to develop a flavorful crust on the outside while keeping the inside perfectly cooked. This method helps to achieve a tender and juicy steak with consistent results every time. **

It is not possible to cook sous-vide without using a heating device. Sous-vide cooking involves vacuum-sealing food in a bag and cooking it in a water bath at a precise temperature for an extended period. The heating device is essential to maintain a consistent temperature throughout the cooking process, ensuring that the food is cooked evenly and to the desired level of doneness. **

The cooking time for a 15 kg sous-vide cooked roast beef can vary depending on the desired level of doneness and the thickness of the meat. As a general guideline, it is recommended to cook a roast beef sous-vide for about 4-6 hours per inch of thickness at a temperature of 55-60°C (131-140°F) for medium-rare doneness. It is important to use a reliable sous-vide machine to ensure precise temperature control and achieve the desired results. **

I have experience with both sous-vide cooking and using the Schinkenfee for slicing ham. Sous-vide cooking involves vacuum-sealing food and cooking it in a water bath at a precise temperature, resulting in evenly cooked and flavorful dishes. The Schinkenfee is a German tool used for slicing ham and other meats with precision and ease. Both techniques require attention to detail and can result in delicious, high-quality dishes when done correctly. **

Cooking a 15 kg roast beef sous-vide style will take a considerable amount of time, as sous-vide cooking is done at low and precise temperatures to ensure even cooking throughout the meat. On average, it can take around 24-48 hours to cook a large piece of meat like a 15 kg roast beef sous-vide style. The exact time will depend on the desired level of doneness and the thickness of the meat. It is important to follow a reliable sous-vide recipe and monitor the cooking process closely for best results. **

To cook 1 kg of smoked meat in a sous-vide cooker, it is recommended to cook it for 24-48 hours at a temperature of 135°F (57°C) for a tender and juicy result. This long cooking time allows the meat to break down and become incredibly tender, while the lower temperature ensures that the meat stays moist and doesn't overcook. After cooking, you can finish the meat by searing it in a hot pan or on a grill for added flavor and texture. **

In the 18th century, 1 sou was equivalent to 1/20 of a livre, which was the currency used in France before the introduction of the euro. Therefore, to convert 18 sous to euros, we would need to know the exchange rate between the livre and the euro at that time. Without that information, it is not possible to accurately determine the equivalent amount in euros. **