A Chef Whose Touch Will Last Charlie Trotter's, which will close in August, had a huge and lasting impact on Chicago's culinary landscape, if not the nation's. Starting From Scraps With a few key ingredients, portions of yesterday's meal can help produce a memorable new dish today. Pera Soho This outpost of Pera Mediterranean Brasserie, in Midtown, sends an edgier message with more black in the décor, and more spice on the menu. Speedy Romeo The pies at a new Brooklyn pizzeria are thin-crust, fired in a wood-burning oven, and more chewy than charred. Rocks Don't Melt, Nor Do Their Fans Whiskey stones, which chill a drink instead of ice, are proving to be a resilient product, even increasing in popularity. The Beer Authority opens in Midtown; Pok Pok NY, from the Portland, Ore., chef Andy Ricker, arrives in Brooklyn; and Ribalta, a pizzeria, opens in the East Village. An autism-friendly brunch, the Umami Food and Art Festival, Orthodox Easter celebrations and other events this week.