"Masu is one of the best all-you-can-eat sushi spots in the San Mateo area. The key reason for this is that they prepare the sushi fresh after you place your order, rather than producing it in bulk and leaving it out. When you first sit down, each person orders two items, and then the waitress will periodically check back to take additional orders, one item at a time. They do tend to take their time returning to your table, which seems to be a strategy to give diners a chance to enjoy their meal and avoid overordering. To really make the most of the all-you-can-eat experience, I recommend visiting if you have a good two hours for lunch. Additionally, if you want to maximize your orders, make sure to catch the attention of any waitress who approaches your table. The menu offers a wide variety of choices, including the Spider Roll, Super California Roll (a deep-fried California roll), Philadelphia Roll, Tekka Maki, Sake Maki, Hamachi Maki, Unagi Roll, Shrimp Tempura Roll, Chicken Teriyaki, Salmon Teriyaki, Tempura, and several types of udon. This place is definitely a great option if you have plenty of time and a big appetite!"