Hot sauce

Dear Chefs,

I got a recipe of Betty’s Surfin Seafood cocktail sauceto eat with Onion Rings. There she used Hot Sauce and HORSERADISH Pest.
I searched for Hot Sauce recipe … But found there were various types of Hot sauce. So, Could not understand what kind of Hot Sauce I should use. Can you help me on this ?

Also HORSERADISH is not common in our country . Thus, pls advise what alternate spice I can use instead of HORSERADISH to make the Cocktail Sauce.
I will search in our shops here … If I get Dry Packeted HORSERADISH how I should use it ?

Thanks
Susmita
Bangladesh

You can get horseradish at any supermarket. It is usually in the refrigerated section. Get the plain one.