I'm doing a net carb ~20 per day so I need to be smart about the vegetables I use. I've been experimenting with little onion and garlic and lots of Collard Greens in my pressure cooker using Chuck Roast, Pork Butt and Lamb Leg (that didn't work out too good) Collards are tuff and can take the heat. I love them. Your milage may vary :-)

Here's some beef pulled out but you can see some of the Collars mixed in.

http://downhaul.com/lowcarb/keto29-56/Pages/31.html