Preheat the oven to 400F / 205C
Lay two pounds of wings and necks with one pound of chicken feet on a sheet tray with a rack and roast for 40 minutes, flipping half way.
Remove the chicken from the rack and place into a large pot. Keeping the pan over the burners, deglaze the pan with 150 ml of red wine and a wooden spoon. Add this to a pot and reduce to 25 percent.
Add the wine to the pot with the chicken, and add enough cold water just to submerge the bones and slowly bring to a simmer.
As the jus simmers, pull the pot off halfway off the burner to create a convection simmer. This will push all the impurities off to one side, making it easier to skim. Use a cup of water to dip the spoon in so that you don’t reintroduce the impurities.
Simmer for two hours.
Chop one leek, two stalks of celery, two carrots, one medium onion and half a celery root cut into 1 inch pieces. Place into a large bowl and coat all the vegetables with 2 tsp tomato paste.
Place onto a sheet tray, and roast for thirty minutes, mixing halfway.
Give the jus another skim if needed (easier without vegetables in) then add in the vegetables, simmering for another two hours.
Turn off the heat, adding in 3 sprigs of thyme, 2 bay leaves and 10 black peppercorns (this can be approximate). Lets this sit for 15 minutes before straining.
Cool down the jus, any remaining fat will float to the top and can be removed. Over high heat, reduce the jus until it becomes nappe (coats the back of a spoon). Skim any impurities that float up durning the reduction.