“Eat your vegetables!” This is the message that greets diners at the door to the GK Mongolian Barbecue on South Main Street in Manteca.The giant poster shows a cornucopia of vegetables – red, yellow and green bell peppers, lettuce, broccoli, sugar peas, garlic, cauliflower and others – looking so crisp and fresh they look like they are about to jump out of their one-dimensional photographic nest. The poster message further informs dining guests that all vegetables offered are “fresh-cut daily.”The food is served smorgasbord-style, with a little twist.