Mix yolks into milk.

Place flour in bowl, add a pinch of salt and yeast

Pour in milk stirring constantly.

Beat until dough leaves side of bowl, turn onto floured surface and knead until smooth. You can do steps 1 to 4 with an electric mixer or in a bread machine on the dough setting.

Make into two equal balls. Place on a greased tray cover with oiled cling film. Put in a warm place to double in size.

Meanwhile make the filling, skin de-seed and chop the tomatoes,

Place oil in frying pan over medium heat, add onion and fry until transparent don't allow to colour.

Add tomatoes and cook until softened.

Add pineapple heat through.

Add tuna, salt and pepper, stir gently,allow to cool.

Roll out dough on a floured surface into two sheets about 12"x 9", place one on a greased baking sheet.

Heat oven to 200C (400F),190C fan.

Place filling on dough and spread out, leave a 1/2 inch border all round, moisten with water.

Place second sheet on top, ensure edges meet, crimp edges together. Brush with beaten egg, snip small holes across top, brush with egg again.

Place in oven, cook for 15-20 minutes until golden brown.

Serve warm with mixed salad.