Toast over medium heat in a dry frying pan:
1¼ cups sesame seeds
Stir constantly until the seeds turn a light golden brown color, look oily, and smell very good. This takes 5-10 minutes. Then grind in a food processor with the following:
⅜ cup yeast flakes
½ tsp. onion powder
¼ tsp. garlic powder
½ tsp. salt
Store in an airtight container in the fridge. Keeps indefinitely. I usually make a double batch so I always have some on hand.