It's plain Greek yogurt but I often add this jalapeno sauce I buy in the store https://www.amazon.com/Jalape%C3%B1o-Relish-Santa-Maria-Jalapeno/dp/B07V4ZBQV1

But generally any seasoning/sauce you like works great.

Edit: the Amazon link seems a bit pricey. I buy it here in Sweden locally in the store and it's generally just a fraction of that price. Just posted the Amazon link to describe more specifically which one I use.