Pre-heat oven to 500F on grill; roast marrow bones in oven 5 minutes each side when oven comes to temperature (they will be brown)
Cut half the meat in 1/2 inch cubes and leave the remainder in larger portions, some attached to bones ( I cut into 1 inch portions)
Season and sauté rabbit or chicken in small amount of oil on high for a couple of minutes each side, until starting to brown: set aside
Season and sauté meat chunks until slightly brown, only 2-3 minutes: set aside
Season and sauté and larger bones with meat attached on each side; set aside
Season and sauté onions in caramelized pan; add about 1 cup in 3-4 portions when sautéing onions to release the flavour from the bottom of the pan (scrape and stir with spatula)
Mix salt, pepper and Summer Savoury with powdered cloves (or make a bouquet garni for 4 whole cloves for easy removal before filling pie shells)
Add all bones, meat, onions, seasonings and enough water to cover all ingredients in a large pan
Simmer for 1 1/2 hours adding more water, if necessary on top of the stove, or in the oven
Maintaining water liquid is important for the sauce; set the timer every 20-30 minutes and top up the liquid, as necessary
Once cooked, remove the meat from the sauce; refrigerate overnight
Scrape off hardened fat the following day; remove meat from bones
Remove marrow from bones and place in sauce
Leave some pieces larger, mince the tougher bits, (this is a rustic pie)
Remove bouquet garni if used
Sauté 1/2 large onion, minced; add sauce and season to taste
Thicken with flour; Simmer for 2-3 minutes on stove top until flour is cooked and sauce thickens
Return remainder of meat to warm cooking liquid; reseason, if needed and cool
Pre-heat oven to 400F
Roll pastry and place bottom crust into a spring form pan; ladle mixture into pastry shell
Cover with top crust; flute edges; prick to release steam
Wash crust with egg yolk or cream for a shiny surface
Bake at 400 degrees F for 30 to 40 minutes until the crust is golden