What: A box of quaintly old-school sweetsWhere: Nielsen?s Pastries, 520 Second Ave. W., 282-3004When: During their “happy hour” (a free pastry with espresso purchase), 2:30-3:30 weekdaysCost: $8.25 totalOfficial Tasting Notes: Clockwise from top left, we have a Sara Bernard, a chocolate-coated dome of chocolate mousse on an almond macaroon; five chocolate-chip cookies, delectably chewy (I bought six, but Rachel already ate one); and a pink-frosted marzipan tart, all $2.75. Admiring the Grandma?s-kitchen decor–plates on the walls, white and blonde-wood tables and chairs–I wondered if they?d meant to name their confection after Sarah Bernhardt, the actress, and just got the spelling a bit off. Yep, Google tells me that?s what mousse-on-a-macaroon is traditionally called.Would I eat there again? Oh, yes, though maybe not a whole box at a time again. These treats are for serious sweet-tooths. For some reason, though I?ve lived a block away for 13 years, this is just the second time I?ve set foot in the place. Uptown Espresso?s banana bread is usually my default breakfast-to-go choice, but Nielsen?s danish (fruit, cream cheese, or custard) looked tempting enough to shift allegiance for.