Take fresh thin strips of tuna - marinate for 10 minutes (no longer) in vinegar (lemon juice works too), oil, ginger garlic and chillis. Add breadcrumbs (or cous-cous), coriander or parsley, turmeric and salt and pepper.
Flash fry for 2 mins.
Wrap in filo pastry (I use 2 layers). Deep-fry in peanut oil (sesame oil if you like spicy) and voila
(My samosa recipe, but sounds very similar to sambousas)
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"I started out with nothin' and I still got most of it left" - Seasick Steve