Answer:
aesthetic modification
Step-by-step explanation:
Aesthetic modification simply means the process of altering the sensory appeal of a product. This is done to improve customer experience and therefore increase customer satisfaction and sales.
The more unique the aesthetic modification the more value the customer gives to the product as it is differentiated from others in the market.
In this instance Richards regularly changes the flavour of fruit tea to suit the season, this is an example of aesthetic modification