The Book of Household Management by Mrs. Beeton

793. COMPARATIVELY SPEAKING, very little difference exists between the

weight of the live and dead pig, and this, simply because there is neither the head nor the hide to be removed. It has been proved that pork loses in cooking 13-1/2, per cent. of its weight. A salted hand weighing 4 lbs. 5 oz. lost in the cooking 11 oz.; after cooking, the meat weighing only 3 lbs. 1 oz., and the bone 9 oz. The original cost was 7-1/2d. a pound; but by this deduction, the cost rose to 9d. per pound with the bone, and 10-1/4d. without it.