Step 1
To begin, place the brine ingredients in a pan and heat until the salt has dissolved. Leave to cool.
Step 2
Meanwhile, combine all the ingredients for the salsa verde in a blender, adding a glug of oil. Blitz to a loose dressing consistency, adding more oil if necessary. Season with lemon juice, salt and pepper and leave to sit for 2 hours before serving
Step 3
Once the brine has cooled, add the beef, ensuring it is fully submerged. Leave to brine for 1 hour
Step 4
To make the celeriac purée, add the butter to a pan and place over a medium heat. Add the celeriac and sweat gently in the butter. Before it starts to colour, cover with the milk and cream and simmer until tender
Step 5
Drain the celeriac, reserving the cooking liquid. Blend the celeriac until smooth, adding a splash of the cooking liquid if needed to form a smooth purée. Season with salt to taste
Step 6
Remove the beef from the brine and rinse in cold water. Cut into 3cm thick slices
Step 7
Preheat a barbecue or chargrill pan until very hot
Step 8
Combine the rub ingredients in a bowl and rub over each steak as a seasoning. Drizzle over a little oil, rubbing it into the meat to mingle with the spice rub
Step 9
Once the barbecue or griddle pan is smoking hot, add the picanha steaks and colour on both sides
Step 10
Meanwhile, heat all the ingredients for the beef and barley glaze in a pan, stirring until combined. Brush the steaks with the glaze as they cook, being careful not to let it burn
Step 11
Remove the roots from the leeks, wash well and place in a bowl. Char the leeks on the barbecue or griddle pan with the beef until blackened on the outside, then remove and allow to cool slightly
Step 12
Remove the steaks from the heat once they reach 52°C when tested with a temperature probe. Leave in a warm place to rest
Step 13
Make the dressing by whisking the ingredients together in a bowl until emulsified. Drizzle over the leek roots and set aside
Step 14
Once cool enough to handle, peel and discard the outer blackened layer of the leeks. Add the water to a pan, bring to a simmer and whisk in the butter to emulsify. Add the leeks and stir through to keep the leeks warm, over a low heat
Step 15
Once rested, the steaks should read 56–57°C on a temperature probe. Glaze once more, then carve into slices. Season with smoked salt
Step 16
Add a spoonful of celeriac purée to each plate. Place slices of beef on top, dress with the leeks and sprinkle over some puffed barley. Spoon over the salsa verde and finish with the dressed leek roots to serve.
In partnership with Great British Chefs