Answer:
Research Chef
Step-by-step explanation:
A "research chef" is a culinary professional who is responsible for making new recipes that will be introduced into the market. He tries to create or develop new recipes by working side-by-side with the food scientists. He has to come up with concepts that will make the recipe suitable for the intended target market.
Aaron above is trying to find an eggless recipe, this shows that he is a research chef because he is trying to come up with a food formula or innovate a recipe in order to please the consumers.