It sometimes seemed like it would never really happen, but all doubts have been erased: Pepe’s will be bringing their incomparable New Haven pizza to Boston in two weeks. The Mall at Chestnut Hill opening is scheduled for December 16th. The oven will be identical to the New Haven original but word is there will be new toppings and salads. The char will remain. If it’s a success, there could be further Pepe’s openings in the Boston area. For you first-time Boston visitors, here’s some advice: no matter what else you get, order a white clam pie!