Mimi Deli - via B. Colleoni, 26 (opposite the restaurant owned by the same people). The deli has a great selection of items in its chilled cabinet which they can serve as a mixed platter. Seating inside or take-away. There's a good selection of vegetarian items - so you can have a great fresh lunch for about 10 euros. Ask them for a vegetarian platter - but make sure they understand you don't want any meat or fish items.