SPQR, the smaller and more casual (no reservation, no tablecloths) Roman-style osteria on Fillmore opened by the folks who own the excellent A16 in the Marina, offers a half-dozen fried options. All are delicious, but our favorites are the chewy little sweetbreads flavored with garlic and oregano and served with cooling chopped celery and lemon wedges; the iconic Brussels sprouts with garlic, capers, lemon, and parsley, ordered by just about everybody; and chicken livers still meltingly tender under their crisp crust. Dishes rotate on and off the list: We also recommend potatoes fried with pancetta, chiles, and pecorino; cauliflower with chiles and lemon; and tiny balls of mozzarella treated to a bath of spicy tomato sauce.