Taco
The history of the taco dates back to the 18th century, Experts believe that it originated in the Aztec ruling area (modern Mexico).The first dictionary reference was "taco minero" "miner's taco"because it traces back to the silver mines, During this century the dynamite used to access the ore below resembled a taco, As it was composed of gun powder wrapped in paper. The gun powder would be the taco meat and the paper would be the shell.
Food groups
Grains
Meat, Poultry, Fish group
Milk, Yogurt and Cheese group
Vegetable group
Citations
https://www.google.com/search?q=food+pyramid&rlz=1CAASUA_enUS687US687&espv=2&biw=1280&bih=913&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiVreH79_rLAhUCyYMKHdL2BLAQsAQIGg&safe=active&ssui=on#imgrc=u-cjy8TBb9syNM%3A
http://alittleadrift.com/2013/04/history-of-a-taco/
https://www.finedininglovers.com/blog/food-drinks/the-history-of-taco-food-infographic/