I've been vegetarian for the past 20 years ( i became a vegetarian at the age of 18). I kinda did it 'cold turkey' after i was told my cholesterol was too high ( since all the meat i liked was fast food crap). Anyway, with all that said, being a vegetarian can mean different things to different people. Some for health, some for moral reasons, religious reasons...... Then there are the different types of vegetarians. Some eat fish and consider themselves vegetarians. Others just dont eat red meat. Some dont eat meat, fish, poultry, pork ..... but will eat animal products such as cheese, milk, eggs... and then there are the extremes, who dont eat anything that has to do with an animal at all.
SO, i think to answer your question, i think u must understand why this person wants to be a vegetarian. This might help u understand his motives. Also, it would help you in finding and creating dishes for him. For example, when i go shopping, i read the ingredients on the lables. If they contain 'chicken fat, lard, dried chicken meat, beef broth .......whatever' I personally wont use them.
Many people also think that being a vegetarian limits what u can eat. And sure, to some extent, that is true. But, I had once counted all the dinners i make and eat , and figured out i can go about 2 to 3 months without repeating a dish. So, its all about learning new things, being willing to try new things, experimenting with new things, new cuisines, being open minded .
As far as vegetarian meats go ( burgers and things u can find in the supermarkets) Some brands are pretty good ( I like morning star farms, worthington), and others taste like crap. One of the main problems i have is when someone who isnt a vegetarian, tries to make a vegetarian dish. Sure, eggplant parmesian, things like this are universal. But, unless u have tried the vegetarian product, u cant just substitute it for 'chicken, or whatever the package says' just cause the package says its supposed to taste like that . Many products focus on the the look rather than the taste. So, something that looks like chicken, tastes or feels like rubber
. MY mom was the worst at this, she once bought me a tofu turkey for thanks giving. It was literally, a slice of tofu shaped like a turkey. I must say, it was the most horrible thing i ever had!!!
I have found that chinese, indian, middle eastern cuisines offer a large variety of vegetarian dishes.
sorry for being long winded about this. I can go on forever.
if u need any specifics, let me know.
By the way, i think i answered your question in here somewhere