A rough guideline is that you’ll need about ½ cup (4 ounces) of rub, total, for each 12-pound brisket.
A 3- to 5-pound rack of beef ribs will require just a bit less rub, maybe ⅓ to ½ cup, total.
Notes
Optional Add-ons- granulated garlic; granulated onion; paprika: Add for color and savory aspect; seasoning salt: However much you add, subtract the same amount of salt from your rub.