Beer gardens and beer halls are popping up in cities all across America and they are discovering a new category of customer – moms with kids. In traditional German beer gardens, whole families would gather to quaff the ales, munch bratwursts, and socialize with their families, neighbors, and friends. At one time, there were over 3000 beer halls in New York City, alone. On Sunday afternoons, it was common to see families with young children in attendance. “It was part of…