1 package of seitan (I Like Upton's. Keep it local!)
Greek seasoning (I like the Greek Town blend from The Spice House in Chicago, but Cavender's is also good)
When the pan is heated toss in the seitan and sprinkle it with the Greek seasoning to cook in some of the flavor.
While the seitan sears you should assemble the Tzatziki sauce.
INGREDIENTS FOR TZATZIKI:
1 (8 ounce) container of non-fat Greek yogurt
1 tablespoon olive oil
1/4 lemon, juiced
salt and pepper to taste
1-1/2 teaspoons chopped fresh dill
1-1/2 cloves garlic, peeled
Toss all the above ingredients into a blender/food processor and blend until it's a creamy sauce. Set it aside.
Now that the meat is seared and coated in the olive oil toss in the some more Greek Seasoning. Enough to coat all the pieces. This part is completely up to your personal taste preference.