Slice the watermelon lengthwise into slices 1 to 2 inches thick. Carefully cut away the rind and discard. Place as much flesh as will fit into a food processor and process until smooth, about 15 seconds. Press through a fine sieve and discard seeds and pulp. Pour the juice into a pitcher. Repeat this process until all the watermelon has been blended and sieved. Chill and serve cold.

From "Native American Cooking, " by Lois Ellen Frank Collected from the Int'l Fido Cooking Echoes