1. Preheat oven to 350 degrees F. In a small saucepan over medium-high heat, combine granulated sugar and water. Mix well. Cook, swirling pan occasionally, until sugar turns a caramel color. Remove from heat.
2. Divide caramel among 8 1/2 cup ramekins, tilting to coat sides with caramel. In a large bowl, combine eggs, pumpkin, milk, brown sugar, vanilla, ginger and allspice. Mix well.
3. Divide pumpkin mixture among ramekins and smooth tops. Place ramekins in a large baking pan and place pan on center rack of oven. Carefully pour enough boiling water into baking pan to come halfway up sides of ramekins.
4. Bake flans until set and a knife inserted in the center comes out almost clean, about 25 to 30 minutes. Remove ramekins from baking pan and cool completely. Unmold each one onto a dessert plate. Serve immediately.
Serves 8
NOTE: "1-3/4 cups mashed sweet potatoes can be substituted for the pumpkin puree."