The Starbucks of hot dogs opens on Merrimack Street on Tuesday and not a moment too soon. The twin brothers Kirste have been working all winter to de-Mossiefy the space. I peeked in the window last night and the reconstruction of this old-school lunch counter is closer to an exorcism. Gone are the dingy booths, dark paneling and the all-over mortician charm of Mossies. In its place are orange and blue walls, and a cool, streamlined interior that resembles a sleek cafeteria at a well-endowed university. What a relief. Beer will not be part of opening ceremonies, because the license was just obtained and those omnipresent kinks are still being worked. But you will be able to sink your pearls into dogs w/ blue cheese, chili, coleslaw, nacho cheese, sliced pepperoni, brined cured pickle spears, crushed pineapples and pizza sauce. Relax, BD may be Starbucks-like in its options, not in $$. Most dogs ring in under $3. Has anyone snapped one of these?