Nothing tastes like nostalgia. And no concrete we've ever tasted combines childhood winter-holiday memories with reminiscences of carefree summers past like the Great Pumpkin, a seasonal concoction whipped up August through December at Ted Drewes. Even the way the Great Pumpkin is made -- an entire slice of pumpkin pie is dumped into the mixer alongside a helping of vanilla custard, then topped off with a meringue-like whipped cream -- sounds like something we would've tried to get away with back in our younger days while Mom was downstairs doing the laundry. Ted Drewes has found perhaps the only way to make pumpkin pie taste even better than pumpkin pie -- make it colder, creamier and slurpable. And then make ours a large.