People following such diets often worry about protein also, and will eat lots of beans, nuts, and seeds, and take protein powders to ensure adequate amino acid intake.
The meat, dairy, egg, and protein powder industries, and the low-carb and paleo crowds, would have you believe that you can’t meet your essential amino acid needs on a vegan diet without taking special measures.
Recently I have been using CRON-O-Meter (www.cronometer.com) to do nutrient analyses on my diet. I like that it analyzes your essential amino acid intake.
Here is what I ate on one day recently (9/24/12):