This will create a paste that the rub will stick to. Here is a recipe for the rub I use on pork shoulders. After you apply a layer of mustard to the pork shoulder, completely coat the shoulder with a good BBQ rub.
yes, its a thing, a noun is a person place or thing. Shelter is a usually used as a noun: We built a shelter to sleep in during the snowstorm. It is also sometimes a verb: We were told to shelter in place during the fire. The trees sheltered us from the hail.
(House), verb afford sanctuary, assign to lodggngs, bed, berth, domicile, find a place for, find room for, furnish room for, furnish with quarters, garrison, harbor, hospitio excipere, hostel, install, locate, make a place for, park, place, put, quarter, screen, shield, situate, station, supply accommodations for.