Boil the cranberries until they pop, in about 1/2 cup of water. Then press the cranberries through a seive, and extract the juice. Save the juice. You can do this in advance. It's pretty thick, almost a puree. If you can find unsweetened cranberry juice, you can use that. Common cranberry cocktail is too sweet. Make strong tea with 8 teabags and 4 cups of boiling water. Add 2 cups of cranberry juice and 2 cups of apple cider, brown sugar, and spices. Stir until the sugar dissolves. Garnish with orange slices. Serve.
