The word “best” raises a lot of expectations.Consider this bar sky high: Anthony Mangieri was called the top pizzaiolo in NYC (no small feat), so his move to SF to reopen the renowned Una Pizza Napoletana created a buzz storm. Now that it’s opening tomorrow, it’s become a crust-induced frenzy.Located on a nondescript SoMa stretch, the interior is bare: granite-topped tables (32 seats) and a small counter where Mangieri works his magic (three smallish sourdough pies at a time). The blistering heat inside the blue brick oven (crafted in his wife’s grandmother’s hometown outside Naples) cooks each in about 90 seconds.There are four choices, no substitutions: (white, marinara, buffalo mozzarella-topped marinara, and cherry tomato), with a fifth possibly on the way. Go with a group, get one of each, and pair them with a few small-production wines from Campania or an Italian beer. Get Mangieri’s signature Neapolitan coffee with a small slab of chocolate for dessert.It opens tomorrow at 5 p.m., and once the dough’s gone, game over. There’s a no-reservations policy, so get there early — and often.Una Pizza Napoletana, 210 11th Street, at Howard Street (415-861-3444 or unapizza.com).Photo: Sfllaw / FlickrMangia, mangia. Some of our favorite star chefs dish out their signature recipes.Up to 50% off So LowSo Low’s sassy sportswear is meant to be seen: Low-rise leggings, yoga tops with built-in support, and sports bras work just as well on the streets as under the sheets. Take up to 50% off today on Swirl.