If you can't find an Argentine one, you can use chili from other countries (Mexico, India, Italy) chopped in the same way. You can also get non-spicy crushed red pepper.  Finely chop a garlic clove ...
When my Texas-native husband first introduced me to an old-school chili spice kit that his mother had been using for decades, I was excited to give it a try—and now, it saves me on busy weekdays ...