Alison Schneider, a food-loving, stay-at-home Manhattan mother of five, conducted some Greenmarket tours and taught informal cooking classes here and there. Then she wanted more. So she started pursuing a master's degree in food studies at New York University. And now she is opening Haven's Kitchen, an elegantly designed shop, cooking school, catering kitchen and party rooms on two floors of a 19th-century carriage house in Chelsea. In the airy street-level space, she has shelves stocked with food products, cooking and tabletop items for sale. At a coffee counter, granola, breakfast pastries and cookies made in-house will be sold and served. Beyond a small reception area is a spacious teaching kitchen with marble counters and professional equipment, run by Julia Sullivan, a Culinary Institute of America graduate from Nashville who worked at Blue Hill at Stone Barns. A full schedule of hands-on classes will be available next week on the business's Web site. [ABSTRACT FROM PUBLISHER]