You can also add more water to make it more thinner for a salad dressing. I also like to add chopped tomatoes, cucumbers and lots of hot sauce to it and use it as a tahini type sauce to go over falafels balls.
1/2 cup seasoned rice vinegar (Marukan brand ONLY)
1/2 cup tahini
1/3 cup water
2 tsp lime juice
1 tsp garlic, minced
1/2 tsp sesame oil
Add all ingredients into a blender, blend for a minute then chili in the refrigerator before serving. It will thicken up in refrigerator as it cools.