Rib rub

A rib rub is a dry mixture of salt, sugar, and spices such as paprika, black pepper, garlic and onion powder, patted onto the surface of ribs before they go into the smoker. Unlike a marinade, a rub does not add liquid or moisture. It sits on the surface, drawing out a little moisture that then dissolves the seasoning into a paste, which dries and sets as the ribs cook, building the foundation of the finished bark.

The balance of a rub matters as much as the ingredient list. Enough salt is needed to season the meat properly, sugar helps the surface caramelize and darken, and too much of either can overwhelm the meat or burn during a long, low and slow cook. Some cooks apply the rub right before cooking, while others let it sit for an hour or overnight, which edges closer to a dry brine and seasons more deeply.

A common mistake is applying rub in a thick, wet layer straight from a jar without patting it in, which can leave clumps that burn or flake off before bark has a chance to form properly. Rubbing it in gently and giving it a few minutes to tack up before the ribs hit the smoker usually gives a more even, better-adhered crust.