Basement is a sandwich, hamburger, and coffee shop on the second basement floor of BIG STEP in Amemura, Shinsaibashi. Its main items are the Philly cheesesteak sandwich and chicken over rice, and toppings such as avocado or egg can be chosen and combined. Orders are placed at the counter and the number ticket is taken to the table, and in one case the food took about 20 minutes to come out. The sandwiches are smaller in portion than expected.