An upscale restaurant in the heart of Clayton, Portabella concentrates on exquisite food without the pretentious service. The atmosphere is white tablecloth posh, but casual at the same time. For appetizers, the flash-fried calamari is superb. Seafood entrées are prominent on the menu, including a fine Sea Bass with a portobello mushroom sauce and a delicious roasted Monkfish. Italian cuisine is also featured, notably a variety of the chef's own pasta dishes. For dessert, try the tiramisu.