"I" was thinking of doing the same thing, only with coconut oil instead of Lard, since i can't get organic pastured Lard anywhere here. Chocolate, especially dark chocolate, has some amazing properties, from:
Lowering Stroke Risk: http://www.sott.net/articles/show/236197-New-Evidence-That-Chocolate-Lowers-Stroke-Risk
Improving Brain Performance: http://www.sott.net/articles/show/171453-Chocolate-Wine-And-Tea-Improve-Brain-Performance
Improving Mathematical ability: http://www.sott.net/articles/show/180782-How-eating-chocolate-can-help-improve-your-maths
Aiding Chronic Fatigue Syndrome: http://www.sott.net/articles/show/141011-Chocolate-aids-fatigue-syndrome-
Reducing Stress Markers: http://www.sott.net/articles/show/196617-New-Evidence-that-Dark-Chocolate-Helps-Ease-Emotional-Stress
Increasing the Amount Of Mitochondria: http://www.sott.net/articles/show/235003-Dark-Chocolate-As-Good-As-Exercise-
Too many positive attributes, perhaphs this is why: http://www.sott.net/articles/show/217958-70-of-World-s-Raw-Chocolate-Soon-To-Be-Genetically-Modified
But be careful because of the carbs, and also not to buy commercial chocolate bars & instead make it yourself from raw unprocessed & unsweetened dark chocolate.
Because: http://www.sott.net/articles/show/194095-Children-Who-Eat-Sweets-and-Chocolate-Every-Day-are-More-Likely-to-be-Violent-as-Adults
Don't know if they have succeded in their plan to GM the cacao though, so it might still be safe at the moment. Plants should be consulted as medicines, that is they should be taken with knowledge of the proportions to be taken, and it's effects on the body osit.