1	To make the tuna filling, mix the tuna, onion, capers, cumin and olive oil and season generously with sea salt and freshly ground black pepper. Reserve until ready to use.
2	To make the carrot salad, combine all ingredients in a bowl and leave to marinate, covered, in the refrigerator.
3	To assemble the briks, lay 2 sheets of pastry over a 20cm plate. Fold in edges to create a 20cm square. Place a quarter of the tuna filling in centre of this square and make a depression in the centre. Break a raw egg into the depression and quickly fold diagonally to create a triangle. Using a pastry brush, moisten the triangle edges with water to seal. Repeat process with remaining 3 briks.
4	Heat oil in a deep-fryer or large saucepan to 190C and deep-fry briks for 2-3 minutes, turning once. Drain on kitchen paper and serve immediately with a squeeze of lemon and some carrot salad. When you cut into the briks the yolk should still be liquid.

Note Warkha pastry, a traditional thin Tunisian pastry used for this dish, is available from The Essential Ingredient. If unavailable, substitute with filo pastry; using 2 sheets of filo, cut into a 30cm circle, for each brik.