The fat leftover from the beef (dripping) can be used to cook all manner of glorious things. Spoon it off into a measuring jug and allow it to set in the fridge. Use it to cook roast potatoes, roast vegetables or do as my grandmother loves: use it to cook a fry up!
Remove the beef from the fridge 2-3 hours before cooking. Pre-heat the oven to 250 degrees C (210 degrees fan). Weigh the cut and calculate the cooking time (beef on the bone will take approx: 22 mins per KG for rare, 26 mins per KG for medium or 35 mins per KG for well-done.) Add the garlic and onions to a roasting tray and spread out to form a base for the beef. Season with salt and pepper before placing the beef, fat side up, in the tray. Put into the oven for 15 minutes before turning the temperature down to 200 degrees C (170 degrees fan) and cook for the calculated time. The best way to tell if the meat is done to your liking is to use a probe thermometer. Remove from the oven, lift the meat onto a large dish and leave to rest for 30-40 minutes (you can cover it with foil if you wish).
Meanwhile make the pesto. Put the walnuts and garlic into a food processor and blitz for a few seconds. Add the rocket and basil. Turn the processor onto a medium speed and drizzle in enough oil so that the pesto can blitz to a smooth consistency. Put the blitzed mixture into a mixing bowl and add the pecorino before mixing in enough extra virgin olive oil to give the desired consistency. Add salt to taste.
Put the potatoes into a roasting tray. Add the rosemary and oil. Mix well before seasoning generously with salt and pepper. Cook in a 200 degree C (170 degree fan) oven for 40-50 minutes, turning once, until crisp on the outside and tender within.
Tom Barry’s family farm is Baytown Park, Dunboyne, Co Meath. He is the third generation on the farm taking over from his late father, Thomas Barry in 2008 and keeps Hereford cross suckler cows as well as pedigree Hereford cows. Herefords are such a docile breed and as a part time farmer, with teenagers helping around the farm, it’s important to have a breed that’s easy to look after and handle. Tom’s farm is in the Green, Low-Carbon, Agri-Environment Scheme (GLAS) for the past 5 years, where frequently taking soil samples and the completion of a nutrient management plan are required.