Forgetting that Clamp's Hamburger Stand closes every day at 2pm (but then reopens at 5pm), I arrived for lunch today at 2:10 only to watch picnickers enjoying the last of their fried-onion-topped burgers. As I grumbled my way back to the car, who should I run into at a table but Ed Levine, author of New York Eats and the man behind the excellent website Serious Eats. Ed and his wife were finishing off a meal with two friends from nearby Roxbury, Arietta and Sam, who had a suggestion: Mamie's in their home town. Mamie's serves real food, Sam declared; and when I pressed the issue, Arietta explained, "really good cheese in the grilled cheese sandwich." It turned out to be a terrific tip, as I hope is evidenced by the picture of my grilled Black Forest ham and brie with spinach, red onion, and hot wholegrain mustard. Mamie's makes a specialty of breakfast, so I am heading back there and will write a full review after a few morning meals.