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.
Shelter In Place. A type of emergency whereby the building is not evacuated but the occupants are instructed to remain inside or to go to a specific location within the facility. Such emergencies may include but are not limited to chemical or weather related occurrences.