I think the white sauce at the halal truck in NY is mayonnaise based, but have no clue about other ingredients. It really is delish. I do wonder what the lamb gyro is mad eof? hmm. But I know the chicken gyro just uses cooked chicken breast meat etc...but just not sure of spices used. I seen some recipes online where they just use oil/salt/pepper & dill, but that doesnt seem quite right.
I could be wrong, but I thought Lamb "Doner" is typically an afghani/Turkish staple, which is just like their version of our seekh kebab.
I do think that white sause is mayonnise and yougurt based similar to greek white sauce:
Ingredients for Greek Yogurt Sauce
Here is what you'll need:
- 16 oz. strained plain yogurt
- 5-6 leaves mint
- 2 cloves minced garlic
- 1/3 c. + 2 tbsp. mayonnaise
- 2 tbsp. red wine vinegar
- 1 tsp. salt
- 1/2 tsp. pepper
- a blender