The difference among the best recipes for this is that some like this one are much healthier. A couple of really good recipes out there are more like a sauce piquant and one uses 2 sticks of butter. I prefer a thinner roux and less fat with more veggies so I can eat this dish all the time. I love the use of serrano peppers. A little extra heat but not too much. Jalapenos would work also. I love fresh hot peppers in my Louisiana.
Be cautious using the word, ‘Authentic’ in Louisiana! You can drive 5 minutes this way or that and have your, ‘Authentic Cajun’ food be considered, ‘Not Authentic!’ 😂😂😂