Secret to Pollos Hermanos?

Watching the series for the umpteenth time, but the way how S3E9 "Kafkaesque" starts, with the commercial for Pollos Hermanos. I always liked to think that the food was so popular because Fring used meth mixed in with the salt and sloooowly got the consumers addicted to meth without them noticing and thats why everybody went back for more:D Okay, 14 restaurants in a country as big as America isn't that much but still, i assume he had those 14 restaurants in the vicinity of the southern border maybe. Damn i want some fried chicken now with those Pollos Hermanos herbs from the commercial:D