In a large bowl combine the dry ingredients until completely combined:
3 cups brown rice flour
1/2 cup buckwheat flour
1 tsp baking soda
1 tsp cinnamon
1/2 tsp each: ginger, allspice, cloves
In a large mixing bowl, combine the ingredients below and stir/mix until completely combined:
1/3 cup brown sugar, packed
3/4 cup dark molasses
1/3 cup water
Add the dry ingredients 1/2 at first, then all, until completely combined. Mixing by hand is good here, if you don't want the dough to get tough--I try not to use a mixer at this stage. When dough is thourough mixed, wrap up in waxed paper or covered bowl and refrigerate for at least 3 hours, until chilled through. Then proceed to baking, below.
Preheat oven to 350 degrees. Roll or pat out dough to 1/3" thickness and cut out desired shapes (I did a star of David for Hannukah, but do anything that isn't too small.) Place about 2" apart on parchment-lined baking sheet. Bake for 12-14 minutes, until lightly browned. Delicious plain or iced.