system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do some foods quickly become overwhelming? Like a quadruple chocolate cake or foods that taste very "rich".
gpt
Rich foods tend to have a lot of free fat and other things that coat the tongue (like chocolate). This can create an overwhelming feeling in the mouth because you're *constantly* tasting chocolate and can't access other tastes. Adding some other taste - especially something acidic - can help to refresh the mouth. This is why cream cheese (mildly acidic) frosting is so popular. Also why the secondary flavor of a dessert is often something citrusy like lemon or orange.