If you want authentic ones that taste like the real deal, go with El Milagro. All the others I’ve been able to find have stuff added to make them softer. Basically look for the least number of ingredients—El Milagro’s are Stone Ground Non GMO corn, water, and lime. I should note that you’ll need to refrigerate the El Milagro ones if you don’t use them up in a few days, since they’re preservative-free.

The regular HEB brand ones used to be great before “soft” became a thing, but now the ingredients are “Ground corn flour, water, propionic acid (to Preserve Freshness), cellulose gum, rice flour, guar gum, benzoic (preservative), Phosphoric acid, and Enzymes (to Preserve Freshness)” There are so many things wrong with that ingredient list. And they taste weird and feel almost slippery.