Dine Downtown is back with stomachs and wallets rejoicing. Restaurants across the grid opened their doors, welcoming patrons with tantalizing three- or four-course dinners for $30. I decided to eat at Biba Tuesday night for the first time. As a lifelong resident of Sacramento, the aura of Biba is undeniable. From her now classic cooking show, Biba's Italian Kitchen, multiple cookbooks and award-winning cuisine, Biba Caggiano is a powerhouse in Northern Italian cuisine. With so much hype resting on the meal, I'm happy to report it didn't disappoint my high expectations. The antipasto offered a choice of Polpette di Granchio e Cappe Sante (crab and prawn cake) or Barbabietole Arrosto (beet