Concord Grape Vacherin with Concord Grape Sorbet, Pistachio Ice Cream, and Vanilla Chantilly

This is a classic example of a light dessert with dramatic flavors that comes to the table looking like a celebration with two sculpturesque pieces of crisp meringue and a tart Concord grape sorbet. Before moving to New York, Marc had never worked with Concord grapes, this fruit hailing from Massachusetts, but he loves it now. The puree recipe alone is worth knowing, if you love this grape. It is so simple to make and it freezes well so it can be used all year long. He also adds a pistachio