Lakota(n?) food.?

Spent 2 weeks in Eagle e, SD this summer, went to Pierre, Sturgis, Crazy horse monument and a lot of other places. The only "Indian" food I had was Indian taco. As far as I can tell, the only Indian part of the Indian taco was the fry bread. As a food lover, I was pretty dissapointed with the original food offering in SD. Perhaps someone can share with us what the Lakota Indians used to eat.