Preheat oven to 350 degrees

In a large bowl, mix pumpkin puree, brown sugar, cinnamon, ginger, nutmeg, cloves, allspice and salt.

Stir in maple syrup, half and half, and flour.

Mix in eggs, one at a time.

Pour filling into unbaked pie shell.

Bake at 350 for 1 hour or until center is set.