A week ago I was chatting with a friend who is now a vegetarian...she mentioned that she loved a Japanese Vegetarian restaurant in Berkeley...Cha-Ya - 1686 Shattuck Ave. @ Virginia. 510. 981-1213 I went by and took a peek - it looked like a nice little spot - unpretentious but comfortable. The menu features vegetarian sushi, tempura & noodle dishes plus additional side dishes. There are also raw dishes for fans of this style ... I've been hearing more about this subject recently. See last week's NY Times for an interesting article about "raw" cooking and what some well known chefs are doing in this endeavor.