Make the brine by adding all the ingredients to the water and bringing to the boil - adjust your cure level based on the exact weight of your meat and water as per the instructions above.
Once the brine is cold, fine a tupperware container big enough to contain the beef completely submerged in the brine. You may need to weigh down the beef if it wants to float.
Leave in the fridge for 10-14 days, turning daily.
Once the beef is cured, wash it under cold water, it is then ready to be turned into salt beef or pastrami.
For Salt Beef: So simple, just put the beef in a stockpot with some onion/carrot/celery/herbs and simmer for 2-3 hours. Best eaten warm, usually with mash and greens. To reheat wrap in foil and pop in the oven, or gently warm in a pan with some butter. Yum!
For Pastrami:
Take the cured beef and submerge in cold water for at least 8 hours in order to desalinate it a bit. Change the water at least once during the process.