I worked for El Chico after getting out of the Army in 1969 and remember helping the cook mix the hot sauce to put out on the tables for the corn chip mix. This was a great tasting hot sauce but you have to keep it cold or it will spoil very quickly. I remember that it would start bubbling after about 4 hours and we would throw it away and make a new batch. Many years later I went back to El Chico and noticed that the hot sauce was not the same and did not taste as good I am sure that they changed the recipe due to early spoilage.