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1
Lay the steak out on a plate.
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2
Sprinkle it with salt and pepper and smear half the garlic on both sides of the steak.
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3
Mix together the cumin, coriander and chilli in a small bowl and spread it evenly over the steak with your fingers.
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4
Leave the steak for 10-15 minutes, then squeeze one of the limes over the top.
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5
Put a small pan of water on to boil, then add the peas.
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6
Boil for a couple minutes, then drain and cool.
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7
Meanwhile, in a small bowl squeeze the juice of one lime over the avocado.
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8
Add the onion, remaining garlic, tomatoes and mix.
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9
Trim and split the chillies, scrape away their seeds (unless you want to keep a few seeds for heat) and dice finely.
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10
Add those to the avocado salsa, along with the cold peas and fresh coriander, and season with salt and pepper.
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11
Cook the steak by heating a griddle pan until very hot.
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12
Lay the steak in the pan, cook for two minutes, turn and repeat on the other side.
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13
Continue until cooked as you like it, then let rest for a few minutes before slicing the steak thinly.
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14
Fan the steak across a platter and edge the plate with watercress and lime wedges.
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15
Serve with the salsa, tzatziki or yogurt, and the tortillas.
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16
Let everyone roll their own for messy but fun eating!
