The word hereof is actually not a legal term. Its meaning in court documents is no different from its ordinary dictionary definition -- Merriam-Webester defines hereof as meaning of this.. It's one of those words used by lawyers and nobody else.
The variety of cabbage commonly known as the Flat Dutch, shown in Fig. 6, of which there are many strains, is a moderately long-season variety. The head is very solid and flat; it measures about 12 inches across and 8 inches deep, and weighs from 8 to 12 pounds.
Creamy slaw dressing is maybe 1/2 ounce of the total weight. Cabbage loses about 10&#37; of the weight to water loss, so 3.5 x 1.10=3.85 ounces of veggies needed per serving. So, you need 3.85 ounces of cabbage, and any other veggie, in total.