Don't You Hate It When--

Don’t you hate it when you read a recipe you might want to make and they have an ingredient you have never heard of Like in the recipe they posted on the 5 star restaurants receipe today. They said mix with Pico De Gallo which is what? Or use Fish Sauce with no explanation on what it is or how to make it. If it is something that is only found in certain places then tell us where to get it, or how to make a substitute.