Background information so the reader can better grasp the analyses you are going to present. This can include anything that puts the analyses into perspective for a restaurateur. You don't need to speak with Doris, but rather should give a realistic wine tasting scenario.
Outline the most important statistical findings. This is a verbal explanation of the statistical analyses from the results section. This is where you try to understand what the data is saying. In the Results section you presented the data with definitions, in the Discussion section you expand/explain/outline the relevance of the data to the restaurateur.
How can the restaurateur get better data next time? Better: more relevant, stronger, more statistically relevant.
What is the take-away message? What is the final report conclusion?