Quickly rinse the ground beef in a strainer under the faucet. Drain and set aside.
Fry half the sliced onions in a saucepan on medium heat till soft and slightly golden.
Add ginger garlic paste, salt, turmeric, red chilli and coriander powders. Mix well.
Add the ground beef to the pan and sauté well in the masala till the water drains and it leaves an aroma. This will take 4-5 mins. Add the tomato paste, adjust the salt and mix well.
Chop the green chillies with the remaining onions after sprinkling a little bit of salt. Crush the onions with the green chillies and salt and incorporate everything together with the knife. This makes the onions sweat a little and also infuses flavour into the filling.
Layer this onion mixture on the ground beef in the saucepan. Keep the cloves and cardamoms on one side of the pan. Top the onion mixture with chopped cilantro. Cover the pan and simmer for 5 minutes till the water is absorbed and the filling is moist. Remove from stove.
Now remove the cloves and cardamoms from the saucepan and discard them. Mix the beef filling well and leave it to cool.
Roll and shape each pastry round/ball into a rectangle around 4"x9".
Mix grated cheddar cheese with the ground beef filling and spread it horizontally on one side of the pastry sheet as seen in the picture.
Gently roll the pastry over half way while tucking the filling inside like a log. Cut long slits in the dough to make strips 1/2 -3/4 inches wide from the inside to the edge on the side towards you as in the picture. Brush the edges of the strips with egg white.
Now criss-cross the strips on the log and stick them on the opposite side with the help of the egg white. Braid in the same fashion till the end of the log.
Brush with egg wash and finally to decorate sprinkle with blue poppy seeds, sesame or black seeds. Make sure the bottom of the logs is dry. So dust the pastry board with flour before working on the logs.
Transfer the logs to a cookie sheet, greased and dusted with flour. Bake the logs in an oven preheated at 350 degrees fahrenheit for 20 - 25 mins till golden brown. Cut the braided pastry logs int 3 inch pieces and enjoy!