In a large bowl, mix together Furmano's Petite Diced Tomatoes, water, salt, red pepper flakes, peppercorns, and minced garlic.
Place brisket in a large container or divided into smaller containers. Cover brisket with tomato mixture.
Cover tightly, brisket in brine. Keep refrigerated for 3 to 7 days.
When ready remove briskets from brine and apply dry rub of your choice. Place in a smoker and smoke until an internal temperature of 165 degrees is reached.