Pharmacy lunch counters top the Sterns' list for great diner food. Regrettably it's difficult to find one these days, so who would think one of the best is located in the ritzy Houston neighborhood of River Oaks? Avalon Diner has been around since 1938, serving up classic burgers and daily specials like smothered pork chops with mustard greens and candied yams with a Texas twist. Don't miss their fabulous lemonade. It's made to order from freshly squeezed lemons.