My sister-in-law, fresh from a World Market shopping trip, placed a packet of dried rose petals in my hands and declared they were ripe for some Sarah confection. That night, I went home and began my brainstorm: rose, pistachio, marzipan. Yum. Cream, ganache, praline. Yum. Strawberry rose pavlova -- rhubarb and rose -- coconut cream and rose pudding.The first fruits of this brainstorm you'll find in the recipe for Pistachio Rose Shortbread Cookies below. Waaaaaay below. You're going to have a scroll through all my thoughts on "food consciousness" before you get to the crumbly buttery tea cookies pictured above.