I have never used a pressure cooker, but I remember my mom and grandmothers using them. Usually when I do a roast I put in my Hamilton Beach 18 qt roaster with carrots, onions, potatoes, and cabbage. My crock pot is to small plus I hate the darn thing, it's electronic and if the power goes off it won't come back on. I miss my old one 4 settings off, high, low, and keep warm.