Sous Vide Homemade Corned Beef

Ingredients

• 3 quarts/12 cups/2.84 liters cold water, divided into 1 quart/~1 l & 2 quarts/~2 l
• 1 cup kosher or 1/2 cup sea, Himalayan, or table salt
• 1/2 c coconut sugar/brown sugar/granulated cane sugar/monk fruit sweetener/xylitol
• 2 Tablespoons Prague powder/saltpeter (you may have to order this online)
• 2 whole cinnamon sticks
• 1 Tablespoon green cardamom pods
• 1 1/2 teaspoons vanilla extract
• 1 1/2 teaspoons ground ginger
• 1 1/2 teaspoons whole cloves
• 1 1/2 teaspoons allspice berries
• 1 1/2 teaspoons black peppercorns
• 2 whole bay leaves
• 1 teaspoon mustard seeds
• 1 7-8lb brisket, trimmed