Until recently, vegetarians and vegans have been rudely excluded from the ramen hysteria that’s overtaken the city, with its fatty pork parts adrift in unctuous pork-bone broths. To the rescue comes Souen, the macrobiotic stalwart that’s spawned a noodle outpost on Curry Row in the East Village. Here amid the chicken tikka masala hawkers is a bright, cheerful oasis where the menu abstains not only from red meat, eggs, and dairy but also refined chemicals and preservatives. Seitan, they’ve got. Not to mention yuba, sesame tofu, edamame guacamole, and a steaming bowl of miso-based curry ramen crammed with slivered squash, kale, napa cabbage, and carrots that’s so satisfying the staunchest pork-bone partisan won’t feel (too) deprived.