As what sources have suggested, the recipe for payday shot appears to be very simple and easy.
You'll just basically need to mix equal parts of butterscotch schnapps and frangelico.
Shake over ice and put salt on the rim.
You can also put the salt in your hand if you don't have a rimmer. Take the shot followed by specks of salt from your hand straight to your tongue.
Here's a collection of Frangelico shot-drink recipes, with a list of the most popular drink concoction.
Upgrade your home bar with these cheap and easy cócktail ideas from hip mixologists shared by Rachaelraymag.com.