I am going to try to do some pulled pork in my slow cooker tomorrow. It is my first time, so I'd like to keep it simple. I have some of my favourite barbecue sauce and onions that I want to put in. I'm wondering how much liquid I should put in the pot in relation to the cut of meat. Should it cover? Nearly cover? If there isn't enough barbecue sauce, what should I use to top it up? I was thinking beer, but wasn't sure.