Decline By 1815, with the publication of physician Gilbert Blane's On the Comparative Health of the British Navy from 1779 to 1814, the efficacy of portable soup for promoting the health of sailors was found lacking. Opinion shifted in favour of canned meats, a process invented in France in 1806, and the proliferation of meat extract, invented by Justus von Liebig.
Decline By 1815, with the publication of physician Gilbert Blane's On the Comparative Health of the British Navy from 1779 to 1814, the efficacy of portable soup for promoting the health of sailors was found lacking. Opinion shifted in favour of canned meats, a process invented in France in 1806 and the proliferation of meat extract, invented by Justus von Liebig.