Ingredient focuses on build-your-own salads and pizzas. Other options include grilled sandwiches. Everything is made fast and fresh. The affordable menu is certainly vegetarian-friendly but carnivores are well served with items like the sausage grinder. Atmosphere is clean, casual and spacious with plenty of seating. Bonus: Wall-to-wall windows make Ingredient a great people-watching spot on the bustling corner of 10th and Mass.