Place salt and boiling water in a tall pot. Stir until salt dissolves. Add ice cubes and stir until water is cold. Place turkey in pot and add enough cold water to cover. Stir brine around turkey, cover pot and refrigerate overnight (anything between 12 and 24 hrs works).
Preheat oven to 350 C
Make the rub: mix dry ingredients, in a bowl then stir in oil.
Remove turkey from brine and pat dry with paper towels. Rub spice mixture over breast then place in foil pan.
Place pan in the middle of the oven and cook for about 1 1/2 hours, basting every half an hour.
Remove turkey to a cutting board and let rest for 20 minutes before slicing.