Brazils and macadamias lowest, almonds and walnuts medium, cashews surprisingly high. If you're doing your own thing and needing to rely on protein sources that do also have carbs like nuts, you really need to invest in a carb counter.
Hi, sorry to break it to you but it is v. v. difficult, especially without tofu. I was on the low carb bootcamp thread and still duck in very now and them. I had great advice there and followed the diet to the letter but I gained over 3 weeks and I eat bit of fish. The problem is that pretty much all veggies contain carbs and as a vegetarian it is v. hard not to eat lots of them when you can't fill up on meat etc... But it is possible if you are inventive and careful. I've swapped to Zoe Harcombe which allows for some carbs. So far, so good and weight is finally coming off. She was a vegetarian for a time so gets how we eat.
There was another thread on this not long ago so have a look and guse luck.
I am trying lower carb rather than low carb. I have a smoothie with whey protein from breakfast, only half a sandwich for lunch, with cup-a-soup and fruit, then a dinner with as few unrefined carbs as I can manage. I'm losing a steady 1-2 pounds a week, which is a healthy loss.
So for me, the answer is to cut down on the refined carbs and carb-heavy food like bread, pasta etc, and stick to the protein-heavy foods, even if they do contain carbs.