Method: Assembling the shawarma (everything else stays the same):
Spread sweet chilli sauce over the lavash.
Add the beef, marinated vegetables and pickled cucumber.
Sprinkle over the onion crumbs in 2 stages:
the first layer goes under the meat (to keep the crunch closer to the centre);
add the second layer on top before wrapping, for visual appeal.
Wrap and warm gently.
The result: Tender beef contrasts with the crispy onion topping. Spicy pickled vegetables + slightly sweet onion crumbs = layers of flavour. The onion crumbs stay crisp thanks to their oil coating