A good, flavorful homemade Tzatziki Sauce is a wonderful addition to pretty much any food that has bright flavors, especially citrus-based. This is a wonderful addition to homemade shawarma, roasted potatoes, or served on the side of a fish prepared with citrus, such as salmon. Below is my starting point for making it, but you'll find over time you'll customize and make your own by adding other flavors you enjoy!
As they say in my home country, Buen Provecho! Let me know in the comments how you decide to make your own!