Yup, oftroy, masa is the word, but really, all it means is dough. There are several bean varieties that are staples below the Rio Grande. Pinto and black beans come to mind most readily. Can't say as I ever found lima beans in Mexico and I am a big fan of lima beans and butter beans, when cooked properly(not all dried up). DubDub's recipe sounds yummy, but I'll pass on the mountain oysters. Aside to DubDub I don't think the etymology of orchid would tell you more than a good long look at the blossom would in this case but, I could be wrong and am too lazy to LIU when the comparison is obvious to me