Bien Cuit Makes Beauteous Tarts  Rebecca Marx  Yesterday, we
wrote about our love of the zucchini sandwich at Bien Cuit, a
French bakery and café that just opened on Smith Street. Today,
we're exploring the sweeter side of its menu.  Rebecca Marx
Bien Cuit offers an impressive array of sweet and savory palm-
sized tarts. Aesthetically speaking, they all walk an appealing
line between French-style OCD perfection and rustic nonchalance.
The cherries on the white cherry and rose tart, for example, are
piled up in a carefree sort of way, and the roast peaches on the
peach and raspberry tart wouldn't look out of place served on
their own at a picnic.  Both tarts are terrific, thanks to their
ripe, lush fruit and delicate and balanced flavors. The rose
crème fraîche smeared at the base of the cherry tart avoids the
fate of many a rose-scented pastry, which far too often
approximate potpourri bowls. Instead, it's subtle, a bit
mysterious, and amps up the flavor of the fruit.  Likewise, the
peach and raspberry tart i