Step 1Heat the oven to 350 degrees.
Step 2In the bowl of a stand mixer, or in a large bowl using an electric mixer, beat together the eggs, molasses and brown sugar. Beat in the water, then the baking soda, salt, nutmeg, cloves, cinnamon and allspice. Beat in the walnuts, and then half of the flour. It's best to beat in the rest of the flour by hand; this recipe makes a lot of dough, possibly too much for some mixers.
Step 3Roll out the dough in batches on a well-floured surface to a generous one-fourth-inch thickness. Cut the dough into diamond shapes and bake on lightly greased sheets until the bottom is lightly browned but the top has yet to color, 11 to 13 minutes.
Step 4Pack in airtight containers; these keep for 2 to 3 months and ship well.